[svn-r25490] bring 25468 from trunk.

Aligning code with changes made in VOL branch. This will make porting
non VOL related changes from trunkto the 1.8 branch much easier.

tested h5commitest.

18 files changed, 3650 insertions, 3210 deletions

diff --git a/MANIFEST b/MANIFEST
index 464cc95..4cb9f15 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -574,6 +574,7 @@
 ./src/H5Fdbg.c
 ./src/H5Fefc.c
 ./src/H5Ffake.c
+./src/H5Fint.c
 ./src/H5Fio.c
 ./src/H5Fmount.c
 ./src/H5Fmpi.c
diff --git a/configure b/configure
index db984f4..2e0b098 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Id: configure.ac 25433 2014-07-18 22:17:58Z brtnfld .
+# From configure.ac Id: configure.ac 25436 2014-07-20 23:00:51Z hdftest .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for HDF5 1.8.14-snap10.
 #
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 94f7422..d353bcc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -117,6 +117,7 @@ IDE_GENERATED_PROPERTIES ("H5E" "${H5E_HDRS}" "${H5E_SRCS}" )
 
 set (H5F_SRCS
     ${HDF5_SRC_DIR}/H5F.c
+    ${HDF5_SRC_DIR}/H5Fint.c
     ${HDF5_SRC_DIR}/H5Faccum.c
     ${HDF5_SRC_DIR}/H5Fcwfs.c
     ${HDF5_SRC_DIR}/H5Fdbg.c
diff --git a/src/H5A.c b/src/H5A.c
index ce7791c..5340fe9 100644
--- a/src/H5A.c
+++ b/src/H5A.c
@@ -63,10 +63,6 @@ typedef struct H5A_iter_cb1 {
 /* Local Prototypes */
 /********************/
 
-static herr_t H5A_open_common(const H5G_loc_t *loc, H5A_t *attr);
-static herr_t H5A_write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id);
-static herr_t H5A_read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id);
-
 
 /*********************/
 /* Package Variables */
@@ -229,6 +225,7 @@ hid_t
 H5Acreate2(hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id,
     hid_t acpl_id, hid_t UNUSED aapl_id)
 {
+    H5A_t	        *attr = NULL;           /* Attribute created */
     H5G_loc_t           loc;                    /* Object location */
     H5T_t		*type;                  /* Datatype to use for attribute */
     H5S_t		*space;                 /* Dataspace to use for attribute */
@@ -252,10 +249,18 @@ H5Acreate2(hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id,
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
 
     /* Go do the real work for attaching the attribute to the dataset */
-    if((ret_value = H5A_create(&loc, attr_name, type, space, acpl_id, H5AC_dxpl_id)) < 0)
+    if(NULL == (attr = H5A_create(&loc, attr_name, type, space, acpl_id, H5AC_dxpl_id)))
 	HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create attribute")
 
+    /* Register the new attribute and get an ID for it */
+    if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID")
+
 done:
+    /* Cleanup on failure */
+    if(ret_value < 0 && attr && H5A_close(attr) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute")
+
     FUNC_LEAVE_API(ret_value)
 } /* H5Acreate2() */
 
@@ -296,6 +301,7 @@ H5Acreate_by_name(hid_t loc_id, const char *obj_name, const char *attr_name,
     hid_t type_id, hid_t space_id, hid_t acpl_id, hid_t UNUSED aapl_id,
     hid_t lapl_id)
 {
+    H5A_t	        *attr = NULL;           /* Attribute created */
     H5G_loc_t           loc;                    /* Object location */
     H5G_loc_t           obj_loc;                /* Location used to open group */
     H5G_name_t          obj_path;            	/* Opened object group hier. path */
@@ -336,185 +342,21 @@ H5Acreate_by_name(hid_t loc_id, const char *obj_name, const char *attr_name,
     loc_found = TRUE;
 
     /* Go do the real work for attaching the attribute to the dataset */
-    if((ret_value = H5A_create(&obj_loc, attr_name, type, space, acpl_id, H5AC_dxpl_id)) < 0)
+    if(NULL == (attr = H5A_create(&obj_loc, attr_name, type, space, acpl_id, H5AC_dxpl_id)))
 	HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create attribute")
 
-done:
-    /* Release resources */
-    if(loc_found && H5G_loc_free(&obj_loc) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
-
-    FUNC_LEAVE_API(ret_value)
-} /* H5Acreate_by_name() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_create
- *
- * Purpose:
- *      This is the guts of creating an attribute.
- * Usage:
- *  hid_t H5A_create(ent, name, type, space)
- *      const H5G_entry_t *ent;   IN: Pointer to symbol table entry for object to attribute
- *      const char *name;   IN: Name of attribute
- *      H5T_t *type;        IN: Datatype of attribute
- *      H5S_t *space;       IN: Dataspace of attribute
- *      hid_t acpl_id       IN: Attribute creation property list
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		April 2, 1998
- *
- *-------------------------------------------------------------------------
- */
-hid_t
-H5A_create(const H5G_loc_t *loc, const char *name, const H5T_t *type,
-    const H5S_t *space, hid_t acpl_id, hid_t dxpl_id)
-{
-    H5A_t	*attr = NULL;   /* Attribute created */
-    hssize_t	snelmts;	/* elements in attribute */
-    size_t	nelmts;		/* elements in attribute */
-    htri_t      tri_ret;        /* htri_t return value */
-    hid_t	ret_value;      /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* check args */
-    HDassert(loc);
-    HDassert(name);
-    HDassert(type);
-    HDassert(space);
-
-    /* Check for existing attribute with same name */
-    /* (technically, the "attribute create" operation will fail for a duplicated
-     *  name, but it's going to be hard to unwind all the special cases on
-     *  failure, so just check first, for now - QAK)
-     */
-    if((tri_ret = H5O_attr_exists(loc->oloc, name, H5AC_ind_dxpl_id)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "error checking attributes")
-    else if(tri_ret > 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_ALREADYEXISTS, FAIL, "attribute already exists")
-
-    /* Check if the dataspace has an extent set (or is NULL) */
-    if(!(H5S_has_extent(space)))
-        HGOTO_ERROR(H5E_ATTR, H5E_BADVALUE, FAIL, "dataspace extent has not been set")
-
-    /* Check if the datatype is "sensible" for use in a dataset */
-    if(H5T_is_sensible(type) != TRUE)
-        HGOTO_ERROR(H5E_ATTR, H5E_BADTYPE, FAIL, "datatype is not sensible")
-
-    /* Build the attribute information */
-    if(NULL == (attr = H5FL_CALLOC(H5A_t)))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed for attribute info")
-
-    if(NULL == (attr->shared = H5FL_CALLOC(H5A_shared_t)))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "can't allocate shared attr structure")
-
-    /* If the creation property list is H5P_DEFAULT, use the default character encoding */
-    if(acpl_id == H5P_DEFAULT)
-        attr->shared->encoding = H5F_DEFAULT_CSET;
-    else {
-        H5P_genplist_t  *ac_plist;      /* ACPL Property list */
-
-        /* Get a local copy of the attribute creation property list */
-        if(NULL == (ac_plist = (H5P_genplist_t *)H5I_object(acpl_id)))
-            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-
-        if(H5P_get(ac_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &(attr->shared->encoding)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get character encoding flag")
-    } /* end else */
-
-    /* Copy the attribute name */
-    attr->shared->name = H5MM_xstrdup(name);
-
-    /* Copy datatype */
-    if(NULL == (attr->shared->dt = H5T_copy(type, H5T_COPY_ALL)))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't get shared datatype info")
-
-    /* Mark datatype as being on disk now */
-    if(H5T_set_loc(attr->shared->dt, loc->oloc->file, H5T_LOC_DISK) < 0)
-        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")
-
-    /* Set the latest format for datatype, if requested */
-    if(H5F_USE_LATEST_FORMAT(loc->oloc->file))
-        if(H5T_set_latest_version(attr->shared->dt) < 0)
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set latest version of datatype")
-
-    /* Copy the dataspace for the attribute */
-    attr->shared->ds = H5S_copy(space, FALSE, TRUE);
-
-    /* Set the latest format for dataspace, if requested */
-    if(H5F_USE_LATEST_FORMAT(loc->oloc->file))
-        if(H5S_set_latest_version(attr->shared->ds) < 0)
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set latest version of dataspace")
-
-    /* Copy the object header information */
-    if(H5O_loc_copy(&(attr->oloc), loc->oloc, H5_COPY_DEEP) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to copy entry")
-
-    /* Deep copy of the group hierarchy path */
-    if(H5G_name_copy(&(attr->path), loc->path, H5_COPY_DEEP) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, FAIL, "unable to copy path")
-
-    /* Check if any of the pieces should be (or are already) shared in the
-     * SOHM table
-     */
-    if(H5SM_try_share(attr->oloc.file, dxpl_id, NULL, 0, H5O_DTYPE_ID, attr->shared->dt, NULL) < 0)
-	HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, FAIL, "trying to share datatype failed")
-    if(H5SM_try_share(attr->oloc.file, dxpl_id, NULL, 0, H5O_SDSPACE_ID, attr->shared->ds, NULL) < 0)
-	HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, FAIL, "trying to share dataspace failed")
-
-    /* Check whether datatype is committed & increment ref count
-     * (to maintain ref. count incr/decr similarity with "shared message"
-     *      type of datatype sharing)
-     */
-    if(H5T_committed(attr->shared->dt)) {
-        /* Increment the reference count on the shared datatype */
-        if(H5T_link(attr->shared->dt, 1, dxpl_id) < 0)
-            HGOTO_ERROR(H5E_OHDR, H5E_LINKCOUNT, FAIL, "unable to adjust shared datatype link count")
-    } /* end if */
-
-    /* Compute the size of pieces on disk.  This is either the size of the
-     * datatype and dataspace messages themselves, or the size of the "shared"
-     * messages if either or both of them are shared.
-     */
-    attr->shared->dt_size = H5O_msg_raw_size(attr->oloc.file, H5O_DTYPE_ID, FALSE, attr->shared->dt);
-    attr->shared->ds_size = H5O_msg_raw_size(attr->oloc.file, H5O_SDSPACE_ID, FALSE, attr->shared->ds);
-
-    /* Get # of elements for attribute's dataspace */
-    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid")
-    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
-
-    HDassert(attr->shared->dt_size > 0);
-    HDassert(attr->shared->ds_size > 0);
-    attr->shared->data_size = nelmts * H5T_GET_SIZE(attr->shared->dt);
-
-    /* Hold the symbol table entry (and file) open */
-    if(H5O_open(&(attr->oloc)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open")
-    attr->obj_opened = TRUE;
-
-    /* Set the version to encode the attribute with */
-    if(H5A_set_version(attr->oloc.file, attr) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTSET, FAIL, "unable to update attribute version")
-
-    /* Insert the attribute into the object header */
-    if(H5O_attr_create(&(attr->oloc), dxpl_id, attr) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to create attribute in object header")
-
     /* Register the new attribute and get an ID for it */
     if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0)
         HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID")
-
 done:
-    /* Cleanup on failure */
+    /* Release resources */
+    if(loc_found && H5G_loc_free(&obj_loc) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
     if(ret_value < 0 && attr && H5A_close(attr) < 0)
             HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute")
 
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_create() */
+    FUNC_LEAVE_API(ret_value)
+} /* H5Acreate_by_name() */
 
 
 /*--------------------------------------------------------------------------
@@ -712,192 +554,6 @@ done:
 } /* H5Aopen_by_idx() */
 
 
-/*-------------------------------------------------------------------------
- * Function:	H5A_open_common
- *
- * Purpose:
- *      Finishes initializing an attributes the open
- *
- * Usage:
- *  herr_t H5A_open_common(loc, name, dxpl_id)
- *      const H5G_loc_t *loc;   IN: Pointer to group location for object
- *      H5A_t *attr;            IN/OUT: Pointer to attribute to initialize
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		December 18, 2006
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5A_open_common(const H5G_loc_t *loc, H5A_t *attr)
-{
-    herr_t ret_value = SUCCEED;         /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* check args */
-    HDassert(loc);
-    HDassert(attr);
-
-#if defined(H5_USING_MEMCHECKER) || !defined(NDEBUG)
-    /* Clear object location */
-    if(H5O_loc_reset(&(attr->oloc)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to reset location")
-#endif /* H5_USING_MEMCHECKER */
-
-    /* Free any previous group hier. path */
-    if(H5G_name_free(&(attr->path)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release group hier. path")
-
-    /* Deep copy of the symbol table entry */
-    if(H5O_loc_copy(&(attr->oloc), loc->oloc, H5_COPY_DEEP) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to copy entry")
-
-    /* Deep copy of the group hier. path */
-    if(H5G_name_copy(&(attr->path), loc->path, H5_COPY_DEEP) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, FAIL, "unable to copy entry")
-
-    /* Hold the symbol table entry (and file) open */
-    if(H5O_open(&(attr->oloc)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open")
-    attr->obj_opened = TRUE;
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_open_common() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_open_by_idx
- *
- * Purpose: 	Open an attribute according to its index order
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		April 2, 1998
- *
- *-------------------------------------------------------------------------
- */
-H5A_t *
-H5A_open_by_idx(const H5G_loc_t *loc, const char *obj_name, H5_index_t idx_type,
-    H5_iter_order_t order, hsize_t n, hid_t lapl_id, hid_t dxpl_id)
-{
-    H5G_loc_t   obj_loc;                /* Location used to open group */
-    H5G_name_t  obj_path;            	/* Opened object group hier. path */
-    H5O_loc_t   obj_oloc;            	/* Opened object object location */
-    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
-    H5A_t       *attr = NULL;           /* Attribute from object header */
-    H5A_t       *ret_value;             /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* check args */
-    HDassert(loc);
-    HDassert(obj_name);
-
-    /* Set up opened group location to fill in */
-    obj_loc.oloc = &obj_oloc;
-    obj_loc.path = &obj_path;
-    H5G_loc_reset(&obj_loc);
-
-    /* Find the object's location */
-    if(H5G_loc_find(loc, obj_name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "object not found")
-    loc_found = TRUE;
-
-    /* Read in attribute from object header */
-    if(NULL == (attr = H5O_attr_open_by_idx(obj_loc.oloc, idx_type, order, n, dxpl_id)))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "unable to load attribute info from object header")
-
-    /* Finish initializing attribute */
-    if(H5A_open_common(&obj_loc, attr) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to initialize attribute")
-
-    /* Set return value */
-    ret_value = attr;
-
-done:
-    /* Release resources */
-    if(loc_found && H5G_loc_free(&obj_loc) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, NULL, "can't free location")
-
-    /* Cleanup on failure */
-    if(ret_value == NULL)
-        if(attr && H5A_close(attr) < 0)
-            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_open_by_idx() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_open_by_name
- *
- * Purpose:	Open an attribute in an object header, according to it's name
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		December 11, 2006
- *
- *-------------------------------------------------------------------------
- */
-H5A_t *
-H5A_open_by_name(const H5G_loc_t *loc, const char *obj_name, const char *attr_name,
-    hid_t lapl_id, hid_t dxpl_id)
-{
-    H5G_loc_t   obj_loc;                /* Location used to open group */
-    H5G_name_t  obj_path;            	/* Opened object group hier. path */
-    H5O_loc_t   obj_oloc;            	/* Opened object object location */
-    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
-    H5A_t       *attr = NULL;           /* Attribute from object header */
-    H5A_t       *ret_value;             /* Return value */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    /* check args */
-    HDassert(loc);
-    HDassert(obj_name);
-    HDassert(attr_name);
-
-    /* Set up opened group location to fill in */
-    obj_loc.oloc = &obj_oloc;
-    obj_loc.path = &obj_path;
-    H5G_loc_reset(&obj_loc);
-
-    /* Find the object's location */
-    if(H5G_loc_find(loc, obj_name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "object not found")
-    loc_found = TRUE;
-
-    /* Read in attribute from object header */
-    if(NULL == (attr = H5O_attr_open_by_name(obj_loc.oloc, attr_name, dxpl_id)))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to load attribute info from object header")
-
-    /* Finish initializing attribute */
-    if(H5A_open_common(loc, attr) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to initialize attribute")
-
-    /* Set return value */
-    ret_value = attr;
-
-done:
-    /* Release resources */
-    if(loc_found && H5G_loc_free(&obj_loc) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, NULL, "can't free location")
-
-    /* Cleanup on failure */
-    if(ret_value == NULL)
-        if(attr && H5A_close(attr) < 0)
-            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_open_by_name() */
-
-
 /*--------------------------------------------------------------------------
  NAME
     H5Awrite
@@ -943,120 +599,6 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5A_write
- PURPOSE
-    Actually write out data to an attribute
- USAGE
-    herr_t H5A_write (attr, mem_type, buf)
-        H5A_t *attr;         IN: Attribute to write
-        const H5T_t *mem_type;     IN: Memory datatype of buffer
-        const void *buf;           IN: Buffer of data to write
- RETURNS
-    Non-negative on success/Negative on failure
-
- DESCRIPTION
-    This function writes a complete attribute to disk.
---------------------------------------------------------------------------*/
-static herr_t
-H5A_write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id)
-{
-    uint8_t		*tconv_buf = NULL;	/* datatype conv buffer */
-    hbool_t             tconv_owned = FALSE;    /* Whether the datatype conv buffer is owned by attribute */
-    uint8_t		*bkg_buf = NULL;	/* temp conversion buffer */
-    hssize_t		snelmts;		/* elements in attribute */
-    size_t		nelmts;		    	/* elements in attribute */
-    H5T_path_t		*tpath = NULL;		/* conversion information*/
-    hid_t		src_id = -1, dst_id = -1;/* temporary type atoms */
-    size_t		src_type_size;		/* size of source type	*/
-    size_t		dst_type_size;		/* size of destination type*/
-    size_t		buf_size;		/* desired buffer size	*/
-    herr_t		ret_value = SUCCEED;
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    HDassert(attr);
-    HDassert(mem_type);
-    HDassert(buf);
-
-    /* Get # of elements for attribute's dataspace */
-    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid")
-    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
-
-    /* If there's actually data elements for the attribute, make a copy of the data passed in */
-    if(nelmts > 0) {
-        /* Get the memory and file datatype sizes */
-        src_type_size = H5T_GET_SIZE(mem_type);
-        dst_type_size = H5T_GET_SIZE(attr->shared->dt);
-
-        /* Convert memory buffer into disk buffer */
-        /* Set up type conversion function */
-        if(NULL == (tpath = H5T_path_find(mem_type, attr->shared->dt, NULL, NULL, dxpl_id, FALSE)))
-            HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes")
-
-        /* Check for type conversion required */
-        if(!H5T_path_noop(tpath)) {
-            if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0 ||
-                    (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0)
-                HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion")
-
-            /* Get the maximum buffer size needed and allocate it */
-            buf_size = nelmts * MAX(src_type_size, dst_type_size);
-            if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size)))
-                HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed")
-            if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size)))
-                HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed")
-
-            /* Copy the user's data into the buffer for conversion */
-            HDmemcpy(tconv_buf, buf, (src_type_size * nelmts));
-
-            /* Perform datatype conversion */
-            if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0)
-                HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed")
-
-            /* Free the previous attribute data buffer, if there is one */
-            if(attr->shared->data)
-                attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data);
-
-            /* Set the pointer to the attribute data to the converted information */
-            attr->shared->data = tconv_buf;
-            tconv_owned = TRUE;
-        } /* end if */
-        /* No type conversion necessary */
-        else {
-            HDassert(dst_type_size == src_type_size);
-
-            /* Allocate the attribute buffer, if there isn't one */
-            if(attr->shared->data == NULL)
-                if(NULL == (attr->shared->data = H5FL_BLK_MALLOC(attr_buf, dst_type_size * nelmts)))
-                    HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
-
-            /* Copy the attribute data into the user's buffer */
-            HDmemcpy(attr->shared->data, buf, (dst_type_size * nelmts));
-        } /* end else */
-
-        /* Modify the attribute in the object header */
-        if(H5O_attr_write(&(attr->oloc), dxpl_id, attr) < 0)
-            HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to modify attribute")
-    } /* end if */
-
-done:
-    /* Release resources */
-    if(src_id >= 0 && H5I_dec_ref(src_id) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
-    if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
-    if(tconv_buf && !tconv_owned)
-        tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf);
-    if(bkg_buf)
-        bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf);
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_write() */
-
-
-/*--------------------------------------------------------------------------
- NAME
     H5Aread
  PURPOSE
     Read in data from an attribute
@@ -1100,109 +642,6 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5A_read
- PURPOSE
-    Actually read in data from an attribute
- USAGE
-    herr_t H5A_read (attr, mem_type, buf)
-        H5A_t *attr;         IN: Attribute to read
-        const H5T_t *mem_type;     IN: Memory datatype of buffer
-        void *buf;           IN: Buffer for data to read
- RETURNS
-    Non-negative on success/Negative on failure
-
- DESCRIPTION
-    This function reads a complete attribute from disk.
---------------------------------------------------------------------------*/
-static herr_t
-H5A_read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id)
-{
-    uint8_t		*tconv_buf = NULL;	/* datatype conv buffer*/
-    uint8_t		*bkg_buf = NULL;	/* background buffer */
-    hssize_t		snelmts;		/* elements in attribute */
-    size_t		nelmts;			/* elements in attribute*/
-    H5T_path_t		*tpath = NULL;		/* type conversion info	*/
-    hid_t		src_id = -1, dst_id = -1;/* temporary type atoms*/
-    size_t		src_type_size;		/* size of source type 	*/
-    size_t		dst_type_size;		/* size of destination type */
-    size_t		buf_size;		/* desired buffer size	*/
-    herr_t		ret_value = SUCCEED;
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    HDassert(attr);
-    HDassert(mem_type);
-    HDassert(buf);
-
-    /* Create buffer for data to store on disk */
-    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid")
-    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
-
-    if(nelmts > 0) {
-        /* Get the memory and file datatype sizes */
-        src_type_size = H5T_GET_SIZE(attr->shared->dt);
-        dst_type_size = H5T_GET_SIZE(mem_type);
-
-        /* Check if the attribute has any data yet, if not, fill with zeroes */
-        if(attr->obj_opened && !attr->shared->data)
-            HDmemset(buf, 0, (dst_type_size * nelmts));
-        else {  /* Attribute exists and has a value */
-            /* Convert memory buffer into disk buffer */
-            /* Set up type conversion function */
-            if(NULL == (tpath = H5T_path_find(attr->shared->dt, mem_type, NULL, NULL, dxpl_id, FALSE)))
-                HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes")
-
-            /* Check for type conversion required */
-            if(!H5T_path_noop(tpath)) {
-                if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0 ||
-                        (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0)
-                    HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion")
-
-                /* Get the maximum buffer size needed and allocate it */
-                buf_size = nelmts * MAX(src_type_size, dst_type_size);
-                if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size)))
-                    HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed")
-                if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size)))
-                    HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed")
-
-                /* Copy the attribute data into the buffer for conversion */
-                HDmemcpy(tconv_buf, attr->shared->data, (src_type_size * nelmts));
-
-                /* Perform datatype conversion.  */
-                if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0)
-                    HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed")
-
-                /* Copy the converted data into the user's buffer */
-                HDmemcpy(buf, tconv_buf, (dst_type_size * nelmts));
-            } /* end if */
-            /* No type conversion necessary */
-            else {
-                HDassert(dst_type_size == src_type_size);
-
-                /* Copy the attribute data into the user's buffer */
-                HDmemcpy(buf, attr->shared->data, (dst_type_size * nelmts));
-            } /* end else */
-        } /* end else */
-    } /* end if */
-
-done:
-    /* Release resources */
-    if(src_id >= 0 && H5I_dec_ref(src_id) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
-    if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
-    if(tconv_buf)
-        tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf);
-    if(bkg_buf)
-	bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf);
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_read() */
-
-
-/*--------------------------------------------------------------------------
- NAME
     H5Aget_space
  PURPOSE
     Gets a copy of the dataspace for an attribute
@@ -1221,7 +660,6 @@ hid_t
 H5Aget_space(hid_t attr_id)
 {
     H5A_t	*attr;                  /* Attribute object for ID */
-    H5S_t	*ds = NULL;             /* Copy of dataspace for attribute */
     hid_t	ret_value;
 
     FUNC_ENTER_API(FAIL)
@@ -1231,18 +669,10 @@ H5Aget_space(hid_t attr_id)
     if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute")
 
-    /* Copy the attribute's dataspace */
-    if(NULL == (ds = H5S_copy(attr->shared->ds, FALSE, TRUE)))
-	HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to copy dataspace")
-
-    /* Atomize */
-    if((ret_value = H5I_register(H5I_DATASPACE, ds, TRUE)) < 0)
-        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace atom")
+    if((ret_value = H5A_get_space(attr)) < 0)
+        HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get space ID of attribute")
 
 done:
-    if(ret_value < 0 && ds)
-        (void)H5S_close(ds);
-
     FUNC_LEAVE_API(ret_value)
 } /* H5Aget_space() */
 
@@ -1267,7 +697,6 @@ hid_t
 H5Aget_type(hid_t attr_id)
 {
     H5A_t	*attr;          /* Attribute object for ID */
-    H5T_t	*dt = NULL;     /* Copy of attribute's datatype */
     hid_t	 ret_value;     /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -1277,36 +706,10 @@ H5Aget_type(hid_t attr_id)
     if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute")
 
-    /* Patch the datatype's "top level" file pointer */
-    if(H5T_patch_file(attr->shared->dt, attr->oloc.file) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to patch datatype's file pointer")
-
-    /*
-     * Copy the attribute's datatype.  If the type is a named type then
-     * reopen the type before returning it to the user. Make the type
-     * read-only.
-     */
-    if(NULL == (dt = H5T_copy(attr->shared->dt, H5T_COPY_REOPEN)))
-	HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to copy datatype")
-
-    /* Mark any datatypes as being in memory now */
-    if(H5T_set_loc(dt, NULL, H5T_LOC_MEMORY) < 0)
-        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")
-
-    /* Lock copied type */
-    if(H5T_lock(dt, FALSE) < 0)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to lock transient datatype")
-
-    /* Atomize */
-    if((ret_value = H5I_register(H5I_DATATYPE, dt, TRUE)) < 0)
-        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype ID")
+    if((ret_value = H5A_get_type(attr)) < 0)
+        HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get space ID of attribute")
 
 done:
-    if(ret_value < 0) {
-        if(dt && H5T_close(dt) < 0)
-            HDONE_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, FAIL, "unable to release datatype")
-    } /* end if */
-
     FUNC_LEAVE_API(ret_value)
 } /* H5Aget_type() */
 
@@ -1334,9 +737,6 @@ hid_t
 H5Aget_create_plist(hid_t attr_id)
 {
     H5A_t		*attr;               /* Attribute object for ID */
-    H5P_genplist_t      *plist;              /* Default property list */
-    hid_t               new_plist_id;        /* ID of ACPL to return */
-    H5P_genplist_t      *new_plist;          /* ACPL to return */
     hid_t		ret_value;
 
     FUNC_ENTER_API(FAIL)
@@ -1347,20 +747,9 @@ H5Aget_create_plist(hid_t attr_id)
     /* Get attribute and default attribute creation property list*/
     if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute")
-    if(NULL == (plist = (H5P_genplist_t *)H5I_object(H5P_LST_ATTRIBUTE_CREATE_ID_g)))
-        HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "can't get default ACPL")
-
-    /* Create the property list object to return */
-    if((new_plist_id = H5P_copy_plist(plist, TRUE)) < 0)
-	HGOTO_ERROR(H5E_PLIST, H5E_CANTINIT, FAIL, "unable to copy attribute creation properties")
-    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_plist_id)))
-        HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "can't get property list")
 
-    /* Set the character encoding on the new property list */
-    if(H5P_set(new_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &(attr->shared->encoding)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set character encoding")
-
-    ret_value = new_plist_id;
+    if((ret_value = H5A_get_create_plist(attr)) < 0)
+        HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get creation property list for attr")
 
 done:
     FUNC_LEAVE_API(ret_value)
@@ -1412,53 +801,6 @@ done:
 } /* H5Aget_name() */
 
 
-/*--------------------------------------------------------------------------
- NAME
-    H5A_get_name
- PURPOSE
-    Private function for H5Aget_name.  Gets a copy of the name for an
-    attribute
- RETURNS
-    This function returns the length of the attribute's name (which may be
-    longer than 'buf_size') on success or negative for failure.
- DESCRIPTION
-        This function retrieves the name of an attribute for an attribute ID.
-    Up to 'buf_size' characters are stored in 'buf' followed by a '\0' string
-    terminator.  If the name of the attribute is longer than 'buf_size'-1,
-    the string terminator is stored in the last position of the buffer to
-    properly terminate the string.
---------------------------------------------------------------------------*/
-ssize_t
-H5A_get_name(H5A_t *attr, size_t buf_size, char *buf)
-{
-    size_t              copy_len, nbytes;
-    ssize_t		ret_value;
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* get the real attribute length */
-    nbytes = HDstrlen(attr->shared->name);
-    HDassert((ssize_t)nbytes >= 0); /*overflow, pretty unlikely --rpm*/
-
-    /* compute the string length which will fit into the user's buffer */
-    copy_len = MIN(buf_size - 1, nbytes);
-
-    /* Copy all/some of the name */
-    if(buf && copy_len > 0) {
-        HDmemcpy(buf, attr->shared->name, copy_len);
-
-        /* Terminate the string */
-        buf[copy_len]='\0';
-    } /* end if */
-
-    /* Set return value */
-    ret_value = (ssize_t)nbytes;
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5A_get_name() */
-
-
 /*-------------------------------------------------------------------------
  * Function:	H5Aget_name_by_idx
  *
@@ -1723,47 +1065,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5A_get_info
- *
- * Purpose:	Retrieve information about an attribute.
- *
- * Return:	Success:	Non-negative
- *		Failure:	Negative
- *
- * Programmer:	Quincey Koziol
- *              February  6, 2007
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5A_get_info(const H5A_t *attr, H5A_info_t *ainfo)
-{
-    herr_t ret_value = SUCCEED;         /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Check args */
-    HDassert(attr);
-    HDassert(ainfo);
-
-    /* Set info for attribute */
-    ainfo->cset = attr->shared->encoding;
-    ainfo->data_size = attr->shared->data_size;
-    if(attr->shared->crt_idx == H5O_MAX_CRT_ORDER_IDX) {
-        ainfo->corder_valid = FALSE;
-        ainfo->corder = 0;
-    } /* end if */
-    else {
-        ainfo->corder_valid = TRUE;
-        ainfo->corder = attr->shared->crt_idx;
-    } /* end else */
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_get_info() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Arename
  *
  * Purpose:     Rename an attribute
@@ -1779,7 +1080,6 @@ done:
 herr_t
 H5Arename(hid_t loc_id, const char *old_name, const char *new_name)
 {
-    H5G_loc_t	loc;	                /* Object location */
     herr_t	ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -1790,14 +1090,18 @@ H5Arename(hid_t loc_id, const char *old_name, const char *new_name)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "name is nil")
     if(H5I_ATTR == H5I_get_type(loc_id))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute")
-    if(H5G_loc(loc_id, & loc) < 0)
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
 
     /* Avoid thrashing things if the names are the same */
-    if(HDstrcmp(old_name, new_name))
-        /* Call attribute rename routine */
+    if(HDstrcmp(old_name, new_name)) {
+        H5G_loc_t	loc;	                /* Object location */
+  
+        if(H5G_loc(loc_id, & loc) < 0)
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
+
+        /* Call private attribute rename routine */
         if(H5O_attr_rename(loc.oloc, H5AC_dxpl_id, old_name, new_name) < 0)
             HGOTO_ERROR(H5E_ATTR, H5E_CANTRENAME, FAIL, "can't rename attribute")
+    } /* end if */
 
 done:
     FUNC_LEAVE_API(ret_value)
@@ -1821,11 +1125,6 @@ herr_t
 H5Arename_by_name(hid_t loc_id, const char *obj_name, const char *old_attr_name,
     const char *new_attr_name, hid_t lapl_id)
 {
-    H5G_loc_t	loc;	                /* Object location */
-    H5G_loc_t   obj_loc;                /* Location used to open group */
-    H5G_name_t  obj_path;            	/* Opened object group hier. path */
-    H5O_loc_t   obj_oloc;            	/* Opened object object location */
-    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
     herr_t	ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -1835,8 +1134,6 @@ H5Arename_by_name(hid_t loc_id, const char *obj_name, const char *old_attr_name,
     /* check arguments */
     if(H5I_ATTR == H5I_get_type(loc_id))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute")
-    if(H5G_loc(loc_id, &loc) < 0)
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
     if(!obj_name || !*obj_name)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name")
     if(!old_attr_name || !*old_attr_name)
@@ -1851,26 +1148,17 @@ H5Arename_by_name(hid_t loc_id, const char *obj_name, const char *old_attr_name,
 
     /* Avoid thrashing things if the names are the same */
     if(HDstrcmp(old_attr_name, new_attr_name)) {
-        /* Set up opened group location to fill in */
-        obj_loc.oloc = &obj_oloc;
-        obj_loc.path = &obj_path;
-        H5G_loc_reset(&obj_loc);
-
-        /* Find the object's location */
-        if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0)
-            HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found")
-        loc_found = TRUE;
-
-        /* Call attribute rename routine */
-        if(H5O_attr_rename(obj_loc.oloc, H5AC_dxpl_id, old_attr_name, new_attr_name) < 0)
+        H5G_loc_t loc;                /* Object location */
+
+        if(H5G_loc(loc_id, & loc) < 0)
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
+
+        /* Call private attribute rename routine */
+        if(H5A_rename_by_name(loc, obj_name, old_attr_name, new_attr_name, lapl_id) < 0)
             HGOTO_ERROR(H5E_ATTR, H5E_CANTRENAME, FAIL, "can't rename attribute")
     } /* end if */
 
 done:
-    /* Release resources */
-    if(loc_found && H5G_loc_free(&obj_loc) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
-
     FUNC_LEAVE_API(ret_value)
 } /* H5Arename_by_name() */
 
@@ -2297,271 +1585,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5A_copy
- *
- * Purpose:	Copies attribute OLD_ATTR.
- *
- * Return:	Success:	Pointer to a new copy of the OLD_ATTR argument.
- *
- *		Failure:	NULL
- *
- * Programmer:	Robb Matzke
- *		Thursday, December  4, 1997
- *
- * Modification:Raymond Lu
- *              4 June 2008
- *              Changed some attribute information to be shared.
- *
- *-------------------------------------------------------------------------
- */
-H5A_t *
-H5A_copy(H5A_t *_new_attr, const H5A_t *old_attr)
-{
-    H5A_t	*new_attr = NULL;
-    hbool_t     allocated_attr = FALSE;   /* Whether the attribute was allocated */
-    H5A_t	*ret_value = NULL;        /* Return value */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    /* check args */
-    HDassert(old_attr);
-
-    /* Allocate attribute structure */
-    if(_new_attr == NULL) {
-        if(NULL == (new_attr = H5FL_CALLOC(H5A_t)))
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
-        allocated_attr = TRUE;
-    } /* end if */
-    else
-        new_attr = _new_attr;
-
-    /* Copy the top level of the attribute */
-    new_attr->sh_loc = old_attr->sh_loc;
-
-    /* Deep copy of the group hierarchy path */
-    if(H5G_name_copy(&(new_attr->path), &(old_attr->path), H5_COPY_DEEP) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, NULL, "unable to copy path")
-
-    /* Share some attribute information */
-    new_attr->shared = old_attr->shared;
-
-    /* Increment reference count for shared object */
-    new_attr->shared->nrefs++;
-
-    /* Don't open the object header for a copy */
-    new_attr->obj_opened = FALSE;
-
-    /* Set the return value */
-    ret_value = new_attr;
-
-done:
-    if(ret_value == NULL)
-        if(allocated_attr && new_attr && H5A_close(new_attr) < 0)
-            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_copy() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_free
- *
- * Purpose:	Frees all memory associated with an attribute, but does not
- *              free the H5A_t structure (which should be done in H5T_close).
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		Monday, November 15, 2004
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5A_free(H5A_t *attr)
-{
-    herr_t ret_value = SUCCEED;           /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    HDassert(attr);
-
-    /* Free dynamicly allocated items */
-    if(attr->shared->name) {
-        H5MM_xfree(attr->shared->name);
-        attr->shared->name = NULL;
-    }
-    if(attr->shared->dt) {
-        if(H5T_close(attr->shared->dt) < 0)
-	    HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release datatype info")
-        attr->shared->dt = NULL;
-    }
-    if(attr->shared->ds) {
-        if(H5S_close(attr->shared->ds) < 0)
-	    HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release dataspace info")
-        attr->shared->ds = NULL;
-    }
-    if(attr->shared->data)
-        attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data);
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_free() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_close
- *
- * Purpose:	Frees an attribute and all associated memory.
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Robb Matzke
- *		Monday, December  8, 1997
- *
- * Modifications:
- *              Raymond Lu
- *              4 June 2008
- *              Changed some attribute object information to be shared.
- *-------------------------------------------------------------------------
- */
-herr_t
-H5A_close(H5A_t *attr)
-{
-    herr_t ret_value = SUCCEED;           /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    HDassert(attr);
-    HDassert(attr->shared);
-
-    /* Close the object's symbol-table entry */
-    if(attr->obj_opened && (H5O_close(&(attr->oloc)) < 0))
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release object header info")
-
-    /* Reference count can be 0.  It only happens when H5A_create fails. */
-    if(attr->shared->nrefs <= 1) {
-        /* Free dynamicly allocated items */
-        if(H5A_free(attr) < 0)
-            HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release attribute info")
-
-        /* Destroy shared attribute struct */
-        attr->shared = H5FL_FREE(H5A_shared_t, attr->shared);
-    } /* end if */
-    else {
-        /* There are other references to the shared part of the attribute.
-         * Only decrement the reference count. */
-        --attr->shared->nrefs;
-    } /* end else */
-
-    /* Free group hierarchy path */
-    if(H5G_name_free(&(attr->path)) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release group hier. path")
-
-    attr->shared = NULL;
-    attr = H5FL_FREE(H5A_t, attr);
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_close() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_oloc
- *
- * Purpose:	Return the object location for an attribute.  It's the
- *		object location for the object to which the attribute
- *		belongs, not the attribute itself.
- *
- * Return:	Success:	Ptr to entry
- *		Failure:	NULL
- *
- * Programmer:	Robb Matzke
- *              Thursday, August  6, 1998
- *
- *-------------------------------------------------------------------------
- */
-H5O_loc_t *
-H5A_oloc(H5A_t *attr)
-{
-    H5O_loc_t *ret_value;   /* Return value */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    HDassert(attr);
-
-    /* Set return value */
-    ret_value = &(attr->oloc);
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_oloc() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5A_nameof
- *
- * Purpose:	Return the group hier. path for an attribute.  It's the
- *		group hier. path for the object to which the attribute
- *		belongs, not the attribute itself.
- *
- * Return:	Success:	Ptr to entry
- *		Failure:	NULL
- *
- * Programmer:	Quincey Koziol
- *              Monday, September 12, 2005
- *
- *-------------------------------------------------------------------------
- */
-H5G_name_t *
-H5A_nameof(H5A_t *attr)
-{
-    H5G_name_t *ret_value;   /* Return value */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    HDassert(attr);
-
-    /* Set return value */
-    ret_value=&(attr->path);
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_nameof() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5A_type
- *
- * Purpose:     Return the datatype for an attribute.
- *
- * Return:      Success:        Ptr to entry
- *              Failure:        NULL
- *
- * Programmer:  Neil Fortner
- *              Friday, November  11, 2011
- *
- *-------------------------------------------------------------------------
- */
-H5T_t *
-H5A_type(const H5A_t *attr)
-{
-    H5T_t *ret_value;   /* Return value */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    HDassert(attr);
-
-    /* Set return value */
-    ret_value = attr->shared->dt;
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5A_type() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Aexists
  *
  * Purpose:	Checks if an attribute with a given name exists on an opened
@@ -2619,10 +1642,6 @@ H5Aexists_by_name(hid_t loc_id, const char *obj_name, const char *attr_name,
     hid_t lapl_id)
 {
     H5G_loc_t   loc;                    /* Object location */
-    H5G_loc_t   obj_loc;                /* Location used to open group */
-    H5G_name_t  obj_path;            	/* Opened object group hier. path */
-    H5O_loc_t   obj_oloc;            	/* Opened object object location */
-    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
     htri_t	ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -2643,25 +1662,10 @@ H5Aexists_by_name(hid_t loc_id, const char *obj_name, const char *attr_name,
         if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS))
             HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID")
 
-    /* Set up opened group location to fill in */
-    obj_loc.oloc = &obj_oloc;
-    obj_loc.path = &obj_path;
-    H5G_loc_reset(&obj_loc);
-
-    /* Find the object's location */
-    if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0)
-        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found")
-    loc_found = TRUE;
-
-    /* Check if the attribute exists */
-    if((ret_value = H5O_attr_exists(obj_loc.oloc, attr_name, H5AC_ind_dxpl_id)) < 0)
+    if((ret_value = H5A_exists_by_name(loc, obj_name, attr_name, lapl_id)) < 0)
         HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to determine if attribute exists")
 
 done:
-    /* Release resources */
-    if(loc_found && H5G_loc_free(&obj_loc) < 0)
-        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
-
     FUNC_LEAVE_API(ret_value)
 } /* H5Aexists_by_name() */
 
diff --git a/src/H5Adeprec.c b/src/H5Adeprec.c
index 10ee70b..124ce7c 100644
--- a/src/H5Adeprec.c
+++ b/src/H5Adeprec.c
@@ -162,6 +162,7 @@ hid_t
 H5Acreate1(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id,
 	  hid_t plist_id)
 {
+    H5A_t	        *attr = NULL;           /* Attribute created */
     H5G_loc_t           loc;                    /* Object location */
     H5T_t		*type;                  /* Datatype to use for attribute */
     H5S_t		*space;                 /* Dataspace to use for attribute */
@@ -185,9 +186,13 @@ H5Acreate1(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id,
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
 
     /* Go do the real work for attaching the attribute to the dataset */
-    if((ret_value = H5A_create(&loc, name, type, space, plist_id, H5AC_dxpl_id)) < 0)
+    if((attr = H5A_create(&loc, name, type, space, plist_id, H5AC_dxpl_id)) < 0)
 	HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create attribute")
 
+    /* Register the new attribute and get an ID for it */
+    if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID")
+
 done:
     FUNC_LEAVE_API(ret_value)
 } /* H5Acreate1() */
diff --git a/src/H5Aint.c b/src/H5Aint.c
index 3eeb76d..b0c068d 100644
--- a/src/H5Aint.c
+++ b/src/H5Aint.c
@@ -119,6 +119,1111 @@ H5FL_SEQ_DEFINE(H5A_t_ptr);
 
 
 /*-------------------------------------------------------------------------
+ * Function:	H5A_create
+ *
+ * Purpose:
+ *      This is the guts of creating an attribute.
+ * Usage:
+ *  hid_t H5A_create(ent, name, type, space)
+ *      const H5G_entry_t *ent;   IN: Pointer to symbol table entry for object to attribute
+ *      const char *name;   IN: Name of attribute
+ *      H5T_t *type;        IN: Datatype of attribute
+ *      H5S_t *space;       IN: Dataspace of attribute
+ *      hid_t acpl_id       IN: Attribute creation property list
+ *
+ * Return: attribute structure on success, NULL on Failure.
+ *
+ * Programmer:	Quincey Koziol
+ *		April 2, 1998
+ *
+ *-------------------------------------------------------------------------
+ */
+H5A_t *
+H5A_create(const H5G_loc_t *loc, const char *name, const H5T_t *type,
+    const H5S_t *space, hid_t acpl_id, hid_t dxpl_id)
+{
+    H5A_t	*attr = NULL;   /* Attribute created */
+    hssize_t	snelmts;	/* elements in attribute */
+    size_t	nelmts;		/* elements in attribute */
+    htri_t      tri_ret;        /* htri_t return value */
+    H5A_t	*ret_value = NULL; /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* check args */
+    HDassert(loc);
+    HDassert(name);
+    HDassert(type);
+    HDassert(space);
+
+    /* Check for existing attribute with same name */
+    /* (technically, the "attribute create" operation will fail for a duplicated
+     *  name, but it's going to be hard to unwind all the special cases on
+     *  failure, so just check first, for now - QAK)
+     */
+    if((tri_ret = H5O_attr_exists(loc->oloc, name, H5AC_ind_dxpl_id)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "error checking attributes")
+    else if(tri_ret > 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_ALREADYEXISTS, NULL, "attribute already exists")
+
+    /* Check if the dataspace has an extent set (or is NULL) */
+    if(!(H5S_has_extent(space)))
+        HGOTO_ERROR(H5E_ATTR, H5E_BADVALUE, NULL, "dataspace extent has not been set")
+
+    /* Check if the datatype is "sensible" for use in a dataset */
+    if(H5T_is_sensible(type) != TRUE)
+        HGOTO_ERROR(H5E_ATTR, H5E_BADTYPE, NULL, "datatype is not sensible")
+
+    /* Build the attribute information */
+    if(NULL == (attr = H5FL_CALLOC(H5A_t)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, NULL, "memory allocation failed for attribute info")
+
+    if(NULL == (attr->shared = H5FL_CALLOC(H5A_shared_t)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, NULL, "can't allocate shared attr structure")
+
+    /* If the creation property list is H5P_DEFAULT, use the default character encoding */
+    if(acpl_id == H5P_DEFAULT)
+        attr->shared->encoding = H5F_DEFAULT_CSET;
+    else {
+        H5P_genplist_t  *ac_plist;      /* ACPL Property list */
+
+        /* Get a local copy of the attribute creation property list */
+        if(NULL == (ac_plist = (H5P_genplist_t *)H5I_object(acpl_id)))
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a property list")
+
+        if(H5P_get(ac_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &(attr->shared->encoding)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get character encoding flag")
+    } /* end else */
+
+    /* Copy the attribute name */
+    attr->shared->name = H5MM_xstrdup(name);
+
+    /* Copy datatype */
+    if(NULL == (attr->shared->dt = H5T_copy(type, H5T_COPY_ALL)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, NULL, "can't get shared datatype info")
+
+    /* Mark datatype as being on disk now */
+    if(H5T_set_loc(attr->shared->dt, loc->oloc->file, H5T_LOC_DISK) < 0)
+        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "invalid datatype location")
+
+    /* Set the latest format for datatype, if requested */
+    if(H5F_USE_LATEST_FORMAT(loc->oloc->file))
+        if(H5T_set_latest_version(attr->shared->dt) < 0)
+            HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, NULL, "can't set latest version of datatype")
+
+    /* Copy the dataspace for the attribute */
+    attr->shared->ds = H5S_copy(space, FALSE, TRUE);
+
+    /* Set the latest format for dataspace, if requested */
+    if(H5F_USE_LATEST_FORMAT(loc->oloc->file))
+        if(H5S_set_latest_version(attr->shared->ds) < 0)
+            HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, NULL, "can't set latest version of dataspace")
+
+    /* Copy the object header information */
+    if(H5O_loc_copy(&(attr->oloc), loc->oloc, H5_COPY_DEEP) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "unable to copy entry")
+
+    /* Deep copy of the group hierarchy path */
+    if(H5G_name_copy(&(attr->path), loc->path, H5_COPY_DEEP) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, NULL, "unable to copy path")
+
+    /* Check if any of the pieces should be (or are already) shared in the
+     * SOHM table
+     */
+    if(H5SM_try_share(attr->oloc.file, dxpl_id, NULL, 0, H5O_DTYPE_ID, attr->shared->dt, NULL) < 0)
+	HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, NULL, "trying to share datatype failed")
+    if(H5SM_try_share(attr->oloc.file, dxpl_id, NULL, 0, H5O_SDSPACE_ID, attr->shared->ds, NULL) < 0)
+	HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, NULL, "trying to share dataspace failed")
+
+    /* Check whether datatype is committed & increment ref count
+     * (to maintain ref. count incr/decr similarity with "shared message"
+     *      type of datatype sharing)
+     */
+    if(H5T_committed(attr->shared->dt)) {
+        /* Increment the reference count on the shared datatype */
+        if(H5T_link(attr->shared->dt, 1, dxpl_id) < 0)
+            HGOTO_ERROR(H5E_OHDR, H5E_LINKCOUNT, NULL, "unable to adjust shared datatype link count")
+    } /* end if */
+
+    /* Compute the size of pieces on disk.  This is either the size of the
+     * datatype and dataspace messages themselves, or the size of the "shared"
+     * messages if either or both of them are shared.
+     */
+    attr->shared->dt_size = H5O_msg_raw_size(attr->oloc.file, H5O_DTYPE_ID, FALSE, attr->shared->dt);
+    attr->shared->ds_size = H5O_msg_raw_size(attr->oloc.file, H5O_SDSPACE_ID, FALSE, attr->shared->ds);
+
+    /* Get # of elements for attribute's dataspace */
+    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, NULL, "dataspace is invalid")
+    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
+
+    HDassert(attr->shared->dt_size > 0);
+    HDassert(attr->shared->ds_size > 0);
+    attr->shared->data_size = nelmts * H5T_GET_SIZE(attr->shared->dt);
+
+    /* Hold the symbol table entry (and file) open */
+    if(H5O_open(&(attr->oloc)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "unable to open")
+    attr->obj_opened = TRUE;
+
+    /* Set the version to encode the attribute with */
+    if(H5A_set_version(attr->oloc.file, attr) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTSET, NULL, "unable to update attribute version")
+
+    /* Insert the attribute into the object header */
+    if(H5O_attr_create(&(attr->oloc), dxpl_id, attr) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, NULL, "unable to create attribute in object header")
+
+    ret_value = attr;
+
+done:
+    if(NULL == ret_value && attr && H5A_close(attr))
+        HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+
+} /* H5A_create() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_open_common
+ *
+ * Purpose:
+ *      Finishes initializing an attributes the open
+ *
+ * Usage:
+ *  herr_t H5A_open_common(loc, name, dxpl_id)
+ *      const H5G_loc_t *loc;   IN: Pointer to group location for object
+ *      H5A_t *attr;            IN/OUT: Pointer to attribute to initialize
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *		December 18, 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5A_open_common(const H5G_loc_t *loc, H5A_t *attr)
+{
+    herr_t ret_value = SUCCEED;         /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* check args */
+    HDassert(loc);
+    HDassert(attr);
+
+#if defined(H5_USING_MEMCHECKER) || !defined(NDEBUG)
+    /* Clear object location */
+    if(H5O_loc_reset(&(attr->oloc)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to reset location")
+#endif /* H5_USING_MEMCHECKER */
+
+    /* Free any previous group hier. path */
+    if(H5G_name_free(&(attr->path)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release group hier. path")
+
+    /* Deep copy of the symbol table entry */
+    if(H5O_loc_copy(&(attr->oloc), loc->oloc, H5_COPY_DEEP) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to copy entry")
+
+    /* Deep copy of the group hier. path */
+    if(H5G_name_copy(&(attr->path), loc->path, H5_COPY_DEEP) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, FAIL, "unable to copy entry")
+
+    /* Hold the symbol table entry (and file) open */
+    if(H5O_open(&(attr->oloc)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open")
+    attr->obj_opened = TRUE;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_open_common() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_open_by_idx
+ *
+ * Purpose: 	Open an attribute according to its index order
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *		April 2, 1998
+ *
+ *-------------------------------------------------------------------------
+ */
+H5A_t *
+H5A_open_by_idx(const H5G_loc_t *loc, const char *obj_name, H5_index_t idx_type,
+    H5_iter_order_t order, hsize_t n, hid_t lapl_id, hid_t dxpl_id)
+{
+    H5G_loc_t   obj_loc;                /* Location used to open group */
+    H5G_name_t  obj_path;            	/* Opened object group hier. path */
+    H5O_loc_t   obj_oloc;            	/* Opened object object location */
+    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
+    H5A_t       *attr = NULL;           /* Attribute from object header */
+    H5A_t       *ret_value;             /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* check args */
+    HDassert(loc);
+    HDassert(obj_name);
+
+    /* Set up opened group location to fill in */
+    obj_loc.oloc = &obj_oloc;
+    obj_loc.path = &obj_path;
+    H5G_loc_reset(&obj_loc);
+
+    /* Find the object's location */
+    if(H5G_loc_find(loc, obj_name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "object not found")
+    loc_found = TRUE;
+
+    /* Read in attribute from object header */
+    if(NULL == (attr = H5O_attr_open_by_idx(obj_loc.oloc, idx_type, order, n, dxpl_id)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "unable to load attribute info from object header")
+
+    /* Finish initializing attribute */
+    if(H5A_open_common(&obj_loc, attr) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to initialize attribute")
+
+    /* Set return value */
+    ret_value = attr;
+
+done:
+    /* Release resources */
+    if(loc_found && H5G_loc_free(&obj_loc) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, NULL, "can't free location")
+
+    /* Cleanup on failure */
+    if(ret_value == NULL)
+        if(attr && H5A_close(attr) < 0)
+            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_open_by_idx() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_open_by_name
+ *
+ * Purpose:	Open an attribute in an object header, according to it's name
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *		December 11, 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+H5A_t *
+H5A_open_by_name(const H5G_loc_t *loc, const char *obj_name, const char *attr_name,
+    hid_t lapl_id, hid_t dxpl_id)
+{
+    H5G_loc_t   obj_loc;                /* Location used to open group */
+    H5G_name_t  obj_path;            	/* Opened object group hier. path */
+    H5O_loc_t   obj_oloc;            	/* Opened object object location */
+    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
+    H5A_t       *attr = NULL;           /* Attribute from object header */
+    H5A_t       *ret_value;             /* Return value */
+
+    FUNC_ENTER_NOAPI(NULL)
+
+    /* check args */
+    HDassert(loc);
+    HDassert(obj_name);
+    HDassert(attr_name);
+
+    /* Set up opened group location to fill in */
+    obj_loc.oloc = &obj_oloc;
+    obj_loc.path = &obj_path;
+    H5G_loc_reset(&obj_loc);
+
+    /* Find the object's location */
+    if(H5G_loc_find(loc, obj_name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "object not found")
+    loc_found = TRUE;
+
+    /* Read in attribute from object header */
+    if(NULL == (attr = H5O_attr_open_by_name(obj_loc.oloc, attr_name, dxpl_id)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to load attribute info from object header")
+
+    /* Finish initializing attribute */
+    if(H5A_open_common(loc, attr) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "unable to initialize attribute")
+
+    /* Set return value */
+    ret_value = attr;
+
+done:
+    /* Release resources */
+    if(loc_found && H5G_loc_free(&obj_loc) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, NULL, "can't free location")
+
+    /* Cleanup on failure */
+    if(ret_value == NULL)
+        if(attr && H5A_close(attr) < 0)
+            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_open_by_name() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5A_write
+ PURPOSE
+    Actually write out data to an attribute
+ USAGE
+    herr_t H5A_write (attr, mem_type, buf)
+        H5A_t *attr;         IN: Attribute to write
+        const H5T_t *mem_type;     IN: Memory datatype of buffer
+        const void *buf;           IN: Buffer of data to write
+ RETURNS
+    Non-negative on success/Negative on failure
+
+ DESCRIPTION
+    This function writes a complete attribute to disk.
+--------------------------------------------------------------------------*/
+herr_t
+H5A_write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id)
+{
+    uint8_t		*tconv_buf = NULL;	/* datatype conv buffer */
+    hbool_t             tconv_owned = FALSE;    /* Whether the datatype conv buffer is owned by attribute */
+    uint8_t		*bkg_buf = NULL;	/* temp conversion buffer */
+    hssize_t		snelmts;		/* elements in attribute */
+    size_t		nelmts;		    	/* elements in attribute */
+    H5T_path_t		*tpath = NULL;		/* conversion information*/
+    hid_t		src_id = -1, dst_id = -1;/* temporary type atoms */
+    size_t		src_type_size;		/* size of source type	*/
+    size_t		dst_type_size;		/* size of destination type*/
+    size_t		buf_size;		/* desired buffer size	*/
+    herr_t		ret_value = SUCCEED;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    HDassert(attr);
+    HDassert(mem_type);
+    HDassert(buf);
+
+    /* Get # of elements for attribute's dataspace */
+    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid")
+    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
+
+    /* If there's actually data elements for the attribute, make a copy of the data passed in */
+    if(nelmts > 0) {
+        /* Get the memory and file datatype sizes */
+        src_type_size = H5T_GET_SIZE(mem_type);
+        dst_type_size = H5T_GET_SIZE(attr->shared->dt);
+
+        /* Convert memory buffer into disk buffer */
+        /* Set up type conversion function */
+        if(NULL == (tpath = H5T_path_find(mem_type, attr->shared->dt, NULL, NULL, dxpl_id, FALSE)))
+            HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes")
+
+        /* Check for type conversion required */
+        if(!H5T_path_noop(tpath)) {
+            if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0 ||
+                    (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0)
+                HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion")
+
+            /* Get the maximum buffer size needed and allocate it */
+            buf_size = nelmts * MAX(src_type_size, dst_type_size);
+            if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size)))
+                HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed")
+            if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size)))
+                HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed")
+
+            /* Copy the user's data into the buffer for conversion */
+            HDmemcpy(tconv_buf, buf, (src_type_size * nelmts));
+
+            /* Perform datatype conversion */
+            if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0)
+                HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed")
+
+            /* Free the previous attribute data buffer, if there is one */
+            if(attr->shared->data)
+                attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data);
+
+            /* Set the pointer to the attribute data to the converted information */
+            attr->shared->data = tconv_buf;
+            tconv_owned = TRUE;
+        } /* end if */
+        /* No type conversion necessary */
+        else {
+            HDassert(dst_type_size == src_type_size);
+
+            /* Allocate the attribute buffer, if there isn't one */
+            if(attr->shared->data == NULL)
+                if(NULL == (attr->shared->data = H5FL_BLK_MALLOC(attr_buf, dst_type_size * nelmts)))
+                    HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
+
+            /* Copy the attribute data into the user's buffer */
+            HDmemcpy(attr->shared->data, buf, (dst_type_size * nelmts));
+        } /* end else */
+
+        /* Modify the attribute in the object header */
+        if(H5O_attr_write(&(attr->oloc), dxpl_id, attr) < 0)
+            HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to modify attribute")
+    } /* end if */
+
+done:
+    /* Release resources */
+    if(src_id >= 0 && H5I_dec_ref(src_id) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
+    if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
+    if(tconv_buf && !tconv_owned)
+        tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf);
+    if(bkg_buf)
+        bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf);
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_write() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5A_read
+ PURPOSE
+    Actually read in data from an attribute
+ USAGE
+    herr_t H5A_read (attr, mem_type, buf)
+        H5A_t *attr;         IN: Attribute to read
+        const H5T_t *mem_type;     IN: Memory datatype of buffer
+        void *buf;           IN: Buffer for data to read
+ RETURNS
+    Non-negative on success/Negative on failure
+
+ DESCRIPTION
+    This function reads a complete attribute from disk.
+--------------------------------------------------------------------------*/
+herr_t
+H5A_read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id)
+{
+    uint8_t		*tconv_buf = NULL;	/* datatype conv buffer*/
+    uint8_t		*bkg_buf = NULL;	/* background buffer */
+    hssize_t		snelmts;		/* elements in attribute */
+    size_t		nelmts;			/* elements in attribute*/
+    H5T_path_t		*tpath = NULL;		/* type conversion info	*/
+    hid_t		src_id = -1, dst_id = -1;/* temporary type atoms*/
+    size_t		src_type_size;		/* size of source type 	*/
+    size_t		dst_type_size;		/* size of destination type */
+    size_t		buf_size;		/* desired buffer size	*/
+    herr_t		ret_value = SUCCEED;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    HDassert(attr);
+    HDassert(mem_type);
+    HDassert(buf);
+
+    /* Create buffer for data to store on disk */
+    if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid")
+    H5_ASSIGN_OVERFLOW(nelmts, snelmts, hssize_t, size_t);
+
+    if(nelmts > 0) {
+        /* Get the memory and file datatype sizes */
+        src_type_size = H5T_GET_SIZE(attr->shared->dt);
+        dst_type_size = H5T_GET_SIZE(mem_type);
+
+        /* Check if the attribute has any data yet, if not, fill with zeroes */
+        if(attr->obj_opened && !attr->shared->data)
+            HDmemset(buf, 0, (dst_type_size * nelmts));
+        else {  /* Attribute exists and has a value */
+            /* Convert memory buffer into disk buffer */
+            /* Set up type conversion function */
+            if(NULL == (tpath = H5T_path_find(attr->shared->dt, mem_type, NULL, NULL, dxpl_id, FALSE)))
+                HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes")
+
+            /* Check for type conversion required */
+            if(!H5T_path_noop(tpath)) {
+                if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0 ||
+                        (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0)
+                    HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion")
+
+                /* Get the maximum buffer size needed and allocate it */
+                buf_size = nelmts * MAX(src_type_size, dst_type_size);
+                if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size)))
+                    HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed")
+                if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size)))
+                    HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed")
+
+                /* Copy the attribute data into the buffer for conversion */
+                HDmemcpy(tconv_buf, attr->shared->data, (src_type_size * nelmts));
+
+                /* Perform datatype conversion.  */
+                if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0)
+                    HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed")
+
+                /* Copy the converted data into the user's buffer */
+                HDmemcpy(buf, tconv_buf, (dst_type_size * nelmts));
+            } /* end if */
+            /* No type conversion necessary */
+            else {
+                HDassert(dst_type_size == src_type_size);
+
+                /* Copy the attribute data into the user's buffer */
+                HDmemcpy(buf, attr->shared->data, (dst_type_size * nelmts));
+            } /* end else */
+        } /* end else */
+    } /* end if */
+
+done:
+    /* Release resources */
+    if(src_id >= 0 && H5I_dec_ref(src_id) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
+    if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object")
+    if(tconv_buf)
+        tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf);
+    if(bkg_buf)
+	bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf);
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_read() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_get_space
+ *
+ * Purpose:	Returns and ID for the dataspace of the attribute.
+ *
+ * Return:	Success:	ID for dataspace
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Mohamad Chaarawi
+ *		March, 2012
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5A_get_space(H5A_t *attr)
+{
+    H5S_t	*ds = NULL;
+    hid_t       ret_value = FAIL;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Copy the attribute's dataspace */
+    if(NULL == (ds = H5S_copy(attr->shared->ds, FALSE, TRUE)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to copy dataspace")
+
+    /* Atomize */
+    if((ret_value = H5I_register(H5I_DATASPACE, ds, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace atom")
+
+done:
+    if(ret_value < 0 && ds) {
+        if(H5S_close(ds) < 0)
+            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_get_space() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_get_type
+ *
+ * Purpose:	Returns and ID for the datatype of the dataset.
+ *
+ * Return:	Success:	ID for datatype
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Mohamad Chaarawi
+ *		March, 2012
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5A_get_type(H5A_t *attr)
+{
+    H5T_t	*dt = NULL;
+    hid_t       ret_value = FAIL;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Patch the datatype's "top level" file pointer */
+    if(H5T_patch_file(attr->shared->dt, attr->oloc.file) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to patch datatype's file pointer")
+
+    /*
+     * Copy the attribute's datatype.  If the type is a named type then
+     * reopen the type before returning it to the user. Make the type
+     * read-only.
+     */
+    if(NULL == (dt = H5T_copy(attr->shared->dt, H5T_COPY_REOPEN)))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to copy datatype")
+
+    /* Mark any datatypes as being in memory now */
+    if(H5T_set_loc(dt, NULL, H5T_LOC_MEMORY) < 0)
+        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")
+
+    /* Lock copied type */
+    if(H5T_lock(dt, FALSE) < 0)
+        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to lock transient datatype")
+
+    /* Create an atom */
+    if((ret_value = H5I_register(H5I_DATATYPE, dt, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype")
+
+done:
+    if(ret_value < 0) {
+        if(dt && H5T_close(dt) < 0)
+            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_get_type() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5A_get_create_plist
+ PURPOSE
+    private version of H5Aget_create_plist
+ RETURNS
+    This function returns the ID of a copy of the attribute's creation
+    property list, or negative on failure.
+
+ ERRORS
+
+ DESCRIPTION
+        This function returns a copy of the creation property list for
+    an attribute.  The resulting ID must be closed with H5Pclose() or
+    resource leaks will occur.
+--------------------------------------------------------------------------*/
+hid_t
+H5A_get_create_plist(H5A_t* attr)
+{
+    H5P_genplist_t      *plist;              /* Default property list */
+    hid_t               new_plist_id;        /* ID of ACPL to return */
+    H5P_genplist_t      *new_plist;          /* ACPL to return */
+    hid_t               ret_value;
+    FUNC_ENTER_NOAPI_NOINIT
+
+    if(NULL == (plist = (H5P_genplist_t *)H5I_object(H5P_LST_ATTRIBUTE_CREATE_ID_g)))
+        HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "can't get default ACPL")
+
+    /* Create the property list object to return */
+    if((new_plist_id = H5P_copy_plist(plist, TRUE)) < 0)
+	HGOTO_ERROR(H5E_PLIST, H5E_CANTINIT, FAIL, "unable to copy attribute creation properties")
+    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_plist_id)))
+        HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "can't get property list")
+
+    /* Set the character encoding on the new property list */
+    if(H5P_set(new_plist, H5P_STRCRT_CHAR_ENCODING_NAME, &(attr->shared->encoding)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set character encoding")
+
+    ret_value = new_plist_id;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5Aget_create_plist() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5A_get_name
+ PURPOSE
+    Private function for H5Aget_name.  Gets a copy of the name for an
+    attribute
+ RETURNS
+    This function returns the length of the attribute's name (which may be
+    longer than 'buf_size') on success or negative for failure.
+ DESCRIPTION
+        This function retrieves the name of an attribute for an attribute ID.
+    Up to 'buf_size' characters are stored in 'buf' followed by a '\0' string
+    terminator.  If the name of the attribute is longer than 'buf_size'-1,
+    the string terminator is stored in the last position of the buffer to
+    properly terminate the string.
+--------------------------------------------------------------------------*/
+ssize_t
+H5A_get_name(H5A_t *attr, size_t buf_size, char *buf)
+{
+    size_t              copy_len, nbytes;
+    ssize_t		ret_value;
+
+    FUNC_ENTER_NOAPI_NOERR
+
+    /* get the real attribute length */
+    nbytes = HDstrlen(attr->shared->name);
+    HDassert((ssize_t)nbytes >= 0); /*overflow, pretty unlikely --rpm*/
+
+    /* compute the string length which will fit into the user's buffer */
+    copy_len = MIN(buf_size - 1, nbytes);
+
+    /* Copy all/some of the name */
+    if(buf && copy_len > 0) {
+        HDmemcpy(buf, attr->shared->name, copy_len);
+
+        /* Terminate the string */
+        buf[copy_len]='\0';
+    } /* end if */
+
+    /* Set return value */
+    ret_value = (ssize_t)nbytes;
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_get_name() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_get_info
+ *
+ * Purpose:	Retrieve information about an attribute.
+ *
+ * Return:	Success:	Non-negative
+ *		Failure:	Negative
+ *
+ * Programmer:	Quincey Koziol
+ *              February  6, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5A_get_info(const H5A_t *attr, H5A_info_t *ainfo)
+{
+    FUNC_ENTER_NOAPI_NOERR
+
+    /* Check args */
+    HDassert(attr);
+    HDassert(ainfo);
+
+    /* Set info for attribute */
+    ainfo->cset = attr->shared->encoding;
+    ainfo->data_size = attr->shared->data_size;
+    if(attr->shared->crt_idx == H5O_MAX_CRT_ORDER_IDX) {
+        ainfo->corder_valid = FALSE;
+        ainfo->corder = 0;
+    } /* end if */
+    else {
+        ainfo->corder_valid = TRUE;
+        ainfo->corder = attr->shared->crt_idx;
+    } /* end else */
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5A_get_info() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_copy
+ *
+ * Purpose:	Copies attribute OLD_ATTR.
+ *
+ * Return:	Success:	Pointer to a new copy of the OLD_ATTR argument.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		Thursday, December  4, 1997
+ *
+ * Modification:Raymond Lu
+ *              4 June 2008
+ *              Changed some attribute information to be shared.
+ *
+ *-------------------------------------------------------------------------
+ */
+H5A_t *
+H5A_copy(H5A_t *_new_attr, const H5A_t *old_attr)
+{
+    H5A_t	*new_attr = NULL;
+    hbool_t     allocated_attr = FALSE;   /* Whether the attribute was allocated */
+    H5A_t	*ret_value = NULL;        /* Return value */
+
+    FUNC_ENTER_NOAPI(NULL)
+
+    /* check args */
+    HDassert(old_attr);
+
+    /* Allocate attribute structure */
+    if(_new_attr == NULL) {
+        if(NULL == (new_attr = H5FL_CALLOC(H5A_t)))
+            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
+        allocated_attr = TRUE;
+    } /* end if */
+    else
+        new_attr = _new_attr;
+
+    /* Copy the top level of the attribute */
+    new_attr->sh_loc = old_attr->sh_loc;
+
+    /* Deep copy of the group hierarchy path */
+    if(H5G_name_copy(&(new_attr->path), &(old_attr->path), H5_COPY_DEEP) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, NULL, "unable to copy path")
+
+    /* Share some attribute information */
+    new_attr->shared = old_attr->shared;
+
+    /* Increment reference count for shared object */
+    new_attr->shared->nrefs++;
+
+    /* Don't open the object header for a copy */
+    new_attr->obj_opened = FALSE;
+
+    /* Set the return value */
+    ret_value = new_attr;
+
+done:
+    if(ret_value == NULL)
+        if(allocated_attr && new_attr && H5A_close(new_attr) < 0)
+            HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, NULL, "can't close attribute")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_free
+ *
+ * Purpose:	Frees all memory associated with an attribute, but does not
+ *              free the H5A_t structure (which should be done in H5T_close).
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *		Monday, November 15, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5A_free(H5A_t *attr)
+{
+    herr_t ret_value = SUCCEED;           /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    HDassert(attr);
+
+    /* Free dynamicly allocated items */
+    if(attr->shared->name) {
+        H5MM_xfree(attr->shared->name);
+        attr->shared->name = NULL;
+    }
+    if(attr->shared->dt) {
+        if(H5T_close(attr->shared->dt) < 0)
+	    HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release datatype info")
+        attr->shared->dt = NULL;
+    }
+    if(attr->shared->ds) {
+        if(H5S_close(attr->shared->ds) < 0)
+	    HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release dataspace info")
+        attr->shared->ds = NULL;
+    }
+    if(attr->shared->data)
+        attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data);
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_free() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_close
+ *
+ * Purpose:	Frees an attribute and all associated memory.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Robb Matzke
+ *		Monday, December  8, 1997
+ *
+ * Modifications:
+ *              Raymond Lu
+ *              4 June 2008
+ *              Changed some attribute object information to be shared.
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5A_close(H5A_t *attr)
+{
+    herr_t ret_value = SUCCEED;           /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    HDassert(attr);
+    HDassert(attr->shared);
+
+    /* Close the object's symbol-table entry */
+    if(attr->obj_opened && (H5O_close(&(attr->oloc)) < 0))
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release object header info")
+
+    /* Reference count can be 0.  It only happens when H5A_create fails. */
+    if(attr->shared->nrefs <= 1) {
+        /* Free dynamicly allocated items */
+        if(H5A_free(attr) < 0)
+            HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release attribute info")
+
+        /* Destroy shared attribute struct */
+        attr->shared = H5FL_FREE(H5A_shared_t, attr->shared);
+    } /* end if */
+    else {
+        /* There are other references to the shared part of the attribute.
+         * Only decrement the reference count. */
+        --attr->shared->nrefs;
+    } /* end else */
+
+    /* Free group hierarchy path */
+    if(H5G_name_free(&(attr->path)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't release group hier. path")
+
+    attr->shared = NULL;
+    attr = H5FL_FREE(H5A_t, attr);
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_oloc
+ *
+ * Purpose:	Return the object location for an attribute.  It's the
+ *		object location for the object to which the attribute
+ *		belongs, not the attribute itself.
+ *
+ * Return:	Success:	Ptr to entry
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *              Thursday, August  6, 1998
+ *
+ *-------------------------------------------------------------------------
+ */
+H5O_loc_t *
+H5A_oloc(H5A_t *attr)
+{
+    H5O_loc_t *ret_value;   /* Return value */
+
+    FUNC_ENTER_NOAPI_NOERR
+
+    HDassert(attr);
+
+    /* Set return value */
+    ret_value = &(attr->oloc);
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_oloc() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_nameof
+ *
+ * Purpose:	Return the group hier. path for an attribute.  It's the
+ *		group hier. path for the object to which the attribute
+ *		belongs, not the attribute itself.
+ *
+ * Return:	Success:	Ptr to entry
+ *		Failure:	NULL
+ *
+ * Programmer:	Quincey Koziol
+ *              Monday, September 12, 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+H5G_name_t *
+H5A_nameof(H5A_t *attr)
+{
+    H5G_name_t *ret_value;   /* Return value */
+
+    FUNC_ENTER_NOAPI_NOERR
+
+    HDassert(attr);
+
+    /* Set return value */
+    ret_value=&(attr->path);
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_nameof() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5A_type
+ *
+ * Purpose:     Return the datatype for an attribute.
+ *
+ * Return:      Success:        Ptr to entry
+ *              Failure:        NULL
+ *
+ * Programmer:  Neil Fortner
+ *              Friday, November  11, 2011
+ *
+ *-------------------------------------------------------------------------
+ */
+H5T_t *
+H5A_type(const H5A_t *attr)
+{
+    H5T_t *ret_value;   /* Return value */
+
+    FUNC_ENTER_NOAPI_NOERR
+
+    HDassert(attr);
+
+    /* Set return value */
+    ret_value = attr->shared->dt;
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5A_type() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_exists_by_name
+ *
+ * Purpose:	Private version of H5Aexists_by_name
+ *
+ * Return:	Success:	TRUE/FALSE
+ * 		Failure:	Negative
+ *
+ * Programmer:	Quincey Koziol
+ *              Thursday, November 1, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+htri_t
+H5A_exists_by_name(H5G_loc_t loc, const char *obj_name, const char *attr_name,
+                   hid_t lapl_id)
+{
+    H5G_loc_t   obj_loc;                /* Location used to open group */
+    H5G_name_t  obj_path;            	/* Opened object group hier. path */
+    H5O_loc_t   obj_oloc;            	/* Opened object object location */
+    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
+    htri_t	ret_value;              /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Set up opened group location to fill in */
+    obj_loc.oloc = &obj_oloc;
+    obj_loc.path = &obj_path;
+    H5G_loc_reset(&obj_loc);
+
+    /* Find the object's location */
+    if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found")
+    loc_found = TRUE;
+
+    /* Check if the attribute exists */
+    if((ret_value = H5O_attr_exists(obj_loc.oloc, attr_name, H5AC_ind_dxpl_id)) < 0)
+        HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to determine if attribute exists")
+
+done:
+    /* Release resources */
+    if(loc_found && H5G_loc_free(&obj_loc) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_exists_by_name() */
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5A__compact_build_table_cb
  *
  * Purpose:	Object header iterator callback routine to copy attribute
@@ -1257,3 +2362,53 @@ done:
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5A_dense_post_copy_file_all */
 
+
+/*-------------------------------------------------------------------------
+ * Function:	H5A_rename_by_name
+ *
+ * Purpose:     Private version of H5Arename_by_name
+ *
+ * Return:	Success:             Non-negative
+ *		Failure:             Negative
+ *
+ * Programmer:	Quincey Koziol
+ *              February 20, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5A_rename_by_name(H5G_loc_t loc, const char *obj_name, const char *old_attr_name,
+                   const char *new_attr_name, hid_t lapl_id)
+{
+    H5G_loc_t   obj_loc;                /* Location used to open group */
+    H5G_name_t  obj_path;            	/* Opened object group hier. path */
+    H5O_loc_t   obj_oloc;            	/* Opened object object location */
+    hbool_t     loc_found = FALSE;      /* Entry at 'obj_name' found */
+    herr_t	ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Avoid thrashing things if the names are the same */
+    if(HDstrcmp(old_attr_name, new_attr_name)) {
+        /* Set up opened group location to fill in */
+        obj_loc.oloc = &obj_oloc;
+        obj_loc.path = &obj_path;
+        H5G_loc_reset(&obj_loc);
+
+        /* Find the object's location */
+        if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0)
+            HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found")
+        loc_found = TRUE;
+
+        /* Call attribute rename routine */
+        if(H5O_attr_rename(obj_loc.oloc, H5AC_dxpl_id, old_attr_name, new_attr_name) < 0)
+            HGOTO_ERROR(H5E_ATTR, H5E_CANTRENAME, FAIL, "can't rename attribute")
+    } /* end if */
+
+done:
+    /* Release resources */
+    if(loc_found && H5G_loc_free(&obj_loc) < 0)
+        HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5A_rename_by_name() */
diff --git a/src/H5Apkg.h b/src/H5Apkg.h
index fa26a9a..efa2b74 100644
--- a/src/H5Apkg.h
+++ b/src/H5Apkg.h
@@ -186,19 +186,29 @@ H5_DLLVAR const H5B2_class_t H5A_BT2_CORDER[1];
 /* Function prototypes for H5A package scope */
 H5_DLL herr_t H5A_init(void);
 H5_DLL herr_t H5A__term_deprec_interface(void);
-H5_DLL hid_t H5A_create(const H5G_loc_t *loc, const char *name,
+H5_DLL H5A_t *H5A_create(const H5G_loc_t *loc, const char *name,
     const H5T_t *type, const H5S_t *space, hid_t acpl_id, hid_t dxpl_id);
-H5_DLL H5A_t * H5A_open_by_name(const H5G_loc_t *loc, const char *obj_name,
+H5_DLL H5A_t *H5A_open_by_name(const H5G_loc_t *loc, const char *obj_name,
     const char *attr_name, hid_t lapl_id, hid_t dxpl_id);
 H5_DLL H5A_t *H5A_open_by_idx(const H5G_loc_t *loc, const char *obj_name,
     H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t lapl_id, hid_t dxpl_id);
+H5_DLL herr_t H5A_open_common(const H5G_loc_t *loc, H5A_t *attr);
+H5_DLL herr_t H5A_write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id);
+H5_DLL herr_t H5A_read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id);
 H5_DLL ssize_t H5A_get_name(H5A_t *attr, size_t buf_size, char *buf);
 H5_DLL H5A_t *H5A_copy(H5A_t *new_attr, const H5A_t *old_attr);
 H5_DLL herr_t H5A_get_info(const H5A_t *attr, H5A_info_t *ainfo);
+H5_DLL hid_t H5A_get_type(H5A_t *attr);
+H5_DLL hid_t H5A_get_space(H5A_t *attr);
+H5_DLL hid_t H5A_get_create_plist(H5A_t* attr);
 H5_DLL herr_t H5A_free(H5A_t *attr);
 H5_DLL herr_t H5A_close(H5A_t *attr);
 H5_DLL htri_t H5A_get_ainfo(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_ainfo_t *ainfo);
 H5_DLL herr_t H5A_set_version(const H5F_t *f, H5A_t *attr);
+H5_DLL herr_t H5A_rename_by_name(H5G_loc_t loc, const char *obj_name, const char *old_attr_name,
+    const char *new_attr_name, hid_t lapl_id);
+H5_DLL htri_t H5A_exists_by_name(H5G_loc_t loc, const char *obj_name, const char *attr_name,
+    hid_t lapl_id);
 
 /* Attribute "dense" storage routines */
 H5_DLL herr_t H5A_dense_create(H5F_t *f, hid_t dxpl_id, H5O_ainfo_t *ainfo);
diff --git a/src/H5D.c b/src/H5D.c
index 7173bbc..46954f0 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -450,7 +450,6 @@ hid_t
 H5Dget_space(hid_t dset_id)
 {
     H5D_t	*dset = NULL;
-    H5S_t	*space = NULL;
     hid_t	ret_value;
 
     FUNC_ENTER_API(FAIL)
@@ -460,22 +459,10 @@ H5Dget_space(hid_t dset_id)
     if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
-    /* Read the dataspace message and return a dataspace object */
-    if(NULL == (space = H5S_copy(dset->shared->space, FALSE, TRUE)))
+    if((ret_value = H5D_get_space(dset)) < 0)
 	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get dataspace")
 
-    /* Create an atom */
-    if((ret_value = H5I_register (H5I_DATASPACE, space, TRUE)) < 0)
-	HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace")
-
 done:
-    if(ret_value < 0) {
-        if(space!=NULL) {
-            if(H5S_close(space) < 0)
-                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
-        } /* end if */
-    } /* end if */
-
     FUNC_LEAVE_API(ret_value)
 }
 
@@ -504,7 +491,7 @@ H5Dget_space_status(hid_t dset_id, H5D_space_status_t *allocation)
     H5TRACE2("e", "i*Ds", dset_id, allocation);
 
     /* Check arguments */
-    if(NULL==(dset=(H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
+    if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
     /* Read dataspace address and return */
@@ -537,7 +524,6 @@ H5Dget_type(hid_t dset_id)
 {
 
     H5D_t	*dset;                  /* Dataset */
-    H5T_t	*dt = NULL;             /* Datatype to return */
     hid_t	ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -547,32 +533,10 @@ H5Dget_type(hid_t dset_id)
     if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
-    /* Patch the datatype's "top level" file pointer */
-    if(H5T_patch_file(dset->shared->type, dset->oloc.file) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to patch datatype's file pointer")
-
-    /* Copy the dataset's datatype */
-    if(NULL == (dt = H5T_copy(dset->shared->type, H5T_COPY_REOPEN)))
-	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy datatype")
-
-    /* Mark any datatypes as being in memory now */
-    if(H5T_set_loc(dt, NULL, H5T_LOC_MEMORY) < 0)
-        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")
-
-    /* Lock copied type */
-    if(H5T_lock(dt, FALSE) < 0)
-	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to lock transient datatype")
-
-    /* Create an atom */
-    if((ret_value = H5I_register(H5I_DATATYPE, dt, TRUE)) < 0)
-	HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype")
+    if((ret_value = H5D_get_type(dset)) < 0)
+	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get dataspace")
 
 done:
-    if(ret_value < 0) {
-        if(dt && H5T_close(dt) < 0)
-            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
-    } /* end if */
-
     FUNC_LEAVE_API(ret_value)
 } /* end H5Dget_type() */
 
@@ -607,7 +571,7 @@ H5Dget_create_plist(hid_t dset_id)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
     if((ret_value = H5D_get_create_plist(dataset)) < 0)
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
+	HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get creation plist")
 
 done:
     FUNC_LEAVE_API(ret_value)
@@ -615,123 +579,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5D_get_create_plist
- *
- * Purpose:	Private function for H5Dget_create_plist
- *
- * Return:	Success:	ID for a copy of the dataset creation
- *				property list.  The template should be
- *				released by calling H5P_close().
- *
- *		Failure:	FAIL
- *
- * Programmer:	Robb Matzke
- *		Tuesday, February  3, 1998
- *
- *-------------------------------------------------------------------------
- */
-hid_t
-H5D_get_create_plist(H5D_t *dset)
-{
-    H5P_genplist_t      *dcpl_plist;            /* Dataset's DCPL */
-    H5P_genplist_t      *new_plist;             /* Copy of dataset's DCPL */
-    H5O_fill_t          copied_fill;            /* Fill value to tweak */
-    hid_t		new_dcpl_id = FAIL;
-    hid_t		ret_value;              /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Check args */
-    if(NULL == (dcpl_plist = (H5P_genplist_t *)H5I_object(dset->shared->dcpl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
-
-    /* Copy the creation property list */
-    if((new_dcpl_id = H5P_copy_plist(dcpl_plist, TRUE)) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to copy the creation property list")
-    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_dcpl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
-
-    /* Retrieve any object creation properties */
-    if(H5O_get_create_plist(&dset->oloc, H5AC_ind_dxpl_id, new_plist) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get object creation info")
-
-    /* Get the fill value property */
-    if(H5P_get(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get fill value")
-
-    /* Check if there is a fill value, but no type yet */
-    if(copied_fill.buf != NULL && copied_fill.type == NULL) {
-        H5T_path_t *tpath;      /* Conversion information*/
-
-        /* Copy the dataset type into the fill value message */
-        if(NULL == (copied_fill.type = H5T_copy(dset->shared->type, H5T_COPY_TRANSIENT)))
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy dataset datatype for fill value")
-
-        /* Set up type conversion function */
-        if(NULL == (tpath = H5T_path_find(dset->shared->type, copied_fill.type, NULL, NULL, H5AC_ind_dxpl_id, FALSE)))
-            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dest data types")
-
-        /* Convert disk form of fill value into memory form */
-        if(!H5T_path_noop(tpath)) {
-            hid_t dst_id, src_id;       /* Source & destination datatypes for type conversion */
-            uint8_t *bkg_buf = NULL;    /* Background conversion buffer */
-            size_t bkg_size;            /* Size of background buffer */
-
-            /* Wrap copies of types to convert */
-            dst_id = H5I_register(H5I_DATATYPE, H5T_copy(copied_fill.type, H5T_COPY_TRANSIENT), FALSE);
-            if(dst_id < 0)
-                HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy/register datatype")
-            src_id = H5I_register(H5I_DATATYPE, H5T_copy(dset->shared->type, H5T_COPY_ALL), FALSE);
-            if(src_id < 0) {
-                H5I_dec_ref(dst_id);
-                HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy/register datatype")
-            } /* end if */
-
-            /* Allocate a background buffer */
-            bkg_size = MAX(H5T_GET_SIZE(copied_fill.type), H5T_GET_SIZE(dset->shared->type));
-            if(H5T_path_bkg(tpath) && NULL == (bkg_buf = H5FL_BLK_CALLOC(type_conv, bkg_size))) {
-                H5I_dec_ref(src_id);
-                H5I_dec_ref(dst_id);
-                HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
-            } /* end if */
-
-            /* Convert fill value */
-            if(H5T_convert(tpath, src_id, dst_id, (size_t)1, (size_t)0, (size_t)0, copied_fill.buf, bkg_buf, H5AC_ind_dxpl_id) < 0) {
-                H5I_dec_ref(src_id);
-                H5I_dec_ref(dst_id);
-                if(bkg_buf)
-                    bkg_buf = H5FL_BLK_FREE(type_conv, bkg_buf);
-                HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "datatype conversion failed")
-            } /* end if */
-
-            /* Release local resources */
-            if(H5I_dec_ref(src_id) < 0)
-                HGOTO_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
-            if(H5I_dec_ref(dst_id) < 0)
-                HGOTO_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
-            if(bkg_buf)
-                bkg_buf = H5FL_BLK_FREE(type_conv, bkg_buf);
-        } /* end if */
-    } /* end if */
-
-    /* Set back the fill value property to property list */
-    if(H5P_set(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "unable to set property list fill value")
-
-    /* Set the return value */
-    ret_value = new_dcpl_id;
-
-done:
-    if(ret_value < 0)
-        if(new_dcpl_id > 0)
-            if(H5I_dec_app_ref(new_dcpl_id) < 0)
-                HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5D_get_create_plist() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Dget_access_plist
  *
  * Purpose:	Returns a copy of the dataset creation property list.
@@ -768,9 +615,6 @@ hid_t
 H5Dget_access_plist(hid_t dset_id)
 {
     H5D_t           *dset;          /* Dataset structure */
-    H5P_genplist_t  *old_plist;     /* Default DAPL */
-    H5P_genplist_t  *new_plist;     /* New DAPL */
-    hid_t           new_dapl_id = FAIL;
     hid_t           ret_value;      /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -780,33 +624,10 @@ H5Dget_access_plist(hid_t dset_id)
     if (NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
-    /* Make a copy of the default dataset access property list */
-    if (NULL == (old_plist = (H5P_genplist_t *)H5I_object(H5P_LST_DATASET_ACCESS_ID_g)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-    if ((new_dapl_id = H5P_copy_plist(old_plist, TRUE)) < 0)
-        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "can't copy dataset access property list")
-    if (NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_dapl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-
-    /* If the dataset is chunked then copy the rdcc parameters */
-    if (dset->shared->layout.type == H5D_CHUNKED) {
-        if (H5P_set(new_plist, H5D_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(dset->shared->cache.chunk.nslots)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache number of slots")
-        if (H5P_set(new_plist, H5D_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(dset->shared->cache.chunk.nbytes_max)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache byte size")
-        if (H5P_set(new_plist, H5D_ACS_PREEMPT_READ_CHUNKS_NAME, &(dset->shared->cache.chunk.w0)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set preempt read chunks")
-    } /* end if */
-
-    /* Set the return value */
-    ret_value = new_dapl_id;
+    if((ret_value = H5D_get_access_plist(dset)) < 0)
+	HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get access plist")
 
 done:
-    if(ret_value < 0)
-        if(new_dapl_id >= 0)
-            if(H5I_dec_app_ref(new_dapl_id) < 0)
-                HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
-
     FUNC_LEAVE_API(ret_value)
 } /* end H5Dget_access_plist() */
 
diff --git a/src/H5Dint.c b/src/H5Dint.c
index 70f0d29..dfad7d7 100644
--- a/src/H5Dint.c
+++ b/src/H5Dint.c
@@ -103,6 +103,9 @@ H5FL_BLK_EXTERN(sieve_buf);
 /* Declare the external free list to manage the H5D_chunk_info_t struct */
 H5FL_EXTERN(H5D_chunk_info_t);
 
+/* Declare extern the free list to manage blocks of type conversion data */
+H5FL_BLK_EXTERN(type_conv);
+
 /* Define a static "default" dataset structure to use to initialize new datasets */
 static H5D_shared_t H5D_def_dset;
 
@@ -2457,3 +2460,269 @@ done:
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5D_flush() */
 
+
+/*-------------------------------------------------------------------------
+ * Function:	H5D_get_create_plist
+ *
+ * Purpose:	Private function for H5Dget_create_plist
+ *
+ * Return:	Success:	ID for a copy of the dataset creation
+ *				property list.  The template should be
+ *				released by calling H5P_close().
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Robb Matzke
+ *		Tuesday, February  3, 1998
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5D_get_create_plist(H5D_t *dset)
+{
+    H5P_genplist_t      *dcpl_plist;            /* Dataset's DCPL */
+    H5P_genplist_t      *new_plist;             /* Copy of dataset's DCPL */
+    H5O_fill_t          copied_fill;            /* Fill value to tweak */
+    hid_t		new_dcpl_id = FAIL;
+    hid_t		ret_value;              /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Check args */
+    if(NULL == (dcpl_plist = (H5P_genplist_t *)H5I_object(dset->shared->dcpl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
+
+    /* Copy the creation property list */
+    if((new_dcpl_id = H5P_copy_plist(dcpl_plist, TRUE)) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to copy the creation property list")
+    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_dcpl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
+
+    /* Retrieve any object creation properties */
+    if(H5O_get_create_plist(&dset->oloc, H5AC_ind_dxpl_id, new_plist) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get object creation info")
+
+    /* Get the fill value property */
+    if(H5P_get(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get fill value")
+
+    /* Check if there is a fill value, but no type yet */
+    if(copied_fill.buf != NULL && copied_fill.type == NULL) {
+        H5T_path_t *tpath;      /* Conversion information*/
+
+        /* Copy the dataset type into the fill value message */
+        if(NULL == (copied_fill.type = H5T_copy(dset->shared->type, H5T_COPY_TRANSIENT)))
+            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy dataset datatype for fill value")
+
+        /* Set up type conversion function */
+        if(NULL == (tpath = H5T_path_find(dset->shared->type, copied_fill.type, NULL, NULL, H5AC_ind_dxpl_id, FALSE)))
+            HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dest data types")
+
+        /* Convert disk form of fill value into memory form */
+        if(!H5T_path_noop(tpath)) {
+            hid_t dst_id, src_id;       /* Source & destination datatypes for type conversion */
+            uint8_t *bkg_buf = NULL;    /* Background conversion buffer */
+            size_t bkg_size;            /* Size of background buffer */
+
+            /* Wrap copies of types to convert */
+            dst_id = H5I_register(H5I_DATATYPE, H5T_copy(copied_fill.type, H5T_COPY_TRANSIENT), FALSE);
+            if(dst_id < 0)
+                HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy/register datatype")
+            src_id = H5I_register(H5I_DATATYPE, H5T_copy(dset->shared->type, H5T_COPY_ALL), FALSE);
+            if(src_id < 0) {
+                H5I_dec_ref(dst_id);
+                HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy/register datatype")
+            } /* end if */
+
+            /* Allocate a background buffer */
+            bkg_size = MAX(H5T_GET_SIZE(copied_fill.type), H5T_GET_SIZE(dset->shared->type));
+            if(H5T_path_bkg(tpath) && NULL == (bkg_buf = H5FL_BLK_CALLOC(type_conv, bkg_size))) {
+                H5I_dec_ref(src_id);
+                H5I_dec_ref(dst_id);
+                HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
+            } /* end if */
+
+            /* Convert fill value */
+            if(H5T_convert(tpath, src_id, dst_id, (size_t)1, (size_t)0, (size_t)0, copied_fill.buf, bkg_buf, H5AC_ind_dxpl_id) < 0) {
+                H5I_dec_ref(src_id);
+                H5I_dec_ref(dst_id);
+                if(bkg_buf)
+                    bkg_buf = H5FL_BLK_FREE(type_conv, bkg_buf);
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "datatype conversion failed")
+            } /* end if */
+
+            /* Release local resources */
+            if(H5I_dec_ref(src_id) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
+            if(H5I_dec_ref(dst_id) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
+            if(bkg_buf)
+                bkg_buf = H5FL_BLK_FREE(type_conv, bkg_buf);
+        } /* end if */
+    } /* end if */
+
+    /* Set back the fill value property to property list */
+    if(H5P_set(new_plist, H5D_CRT_FILL_VALUE_NAME, &copied_fill) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "unable to set property list fill value")
+
+    /* Set the return value */
+    ret_value = new_dcpl_id;
+
+done:
+    if(ret_value < 0)
+        if(new_dcpl_id > 0)
+            if(H5I_dec_app_ref(new_dcpl_id) < 0)
+                HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "unable to close temporary object")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D_get_create_plist() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5D_get_access_plist
+ *
+ * Purpose:	Returns a copy of the dataset access property list.
+ *
+ * Return:	Success:	ID for a copy of the dataset access
+ *				property list. 
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Mohamad Chaarawi
+ *		March, 2012
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5D_get_access_plist(H5D_t *dset)
+{
+    H5P_genplist_t      *old_plist;     /* Default DAPL */
+    H5P_genplist_t      *new_plist;     /* New DAPL */
+    hid_t               new_dapl_id = FAIL;
+    hid_t               ret_value = FAIL;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Make a copy of the default dataset access property list */
+    if (NULL == (old_plist = (H5P_genplist_t *)H5I_object(H5P_LST_DATASET_ACCESS_ID_g)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
+    if ((new_dapl_id = H5P_copy_plist(old_plist, TRUE)) < 0)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "can't copy dataset access property list")
+    if (NULL == (new_plist = (H5P_genplist_t *)H5I_object(new_dapl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
+
+    /* If the dataset is chunked then copy the rdcc parameters */
+    if (dset->shared->layout.type == H5D_CHUNKED) {
+        if (H5P_set(new_plist, H5D_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(dset->shared->cache.chunk.nslots)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache number of slots")
+        if (H5P_set(new_plist, H5D_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(dset->shared->cache.chunk.nbytes_max)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache byte size")
+        if (H5P_set(new_plist, H5D_ACS_PREEMPT_READ_CHUNKS_NAME, &(dset->shared->cache.chunk.w0)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set preempt read chunks")
+    } /* end if */
+
+    /* Set the return value */
+    ret_value = new_dapl_id;
+
+done:
+    if(ret_value < 0) {
+        if(new_dapl_id > 0)
+            if(H5I_dec_app_ref(new_dapl_id) < 0)
+                HDONE_ERROR(H5E_SYM, H5E_CANTDEC, FAIL, "can't free")
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D_get_access_plist() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5D_get_space
+ *
+ * Purpose:	Returns and ID for the dataspace of the dataset.
+ *
+ * Return:	Success:	ID for dataspace
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Mohamad Chaarawi
+ *		March, 2012
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5D_get_space(H5D_t *dset)
+{
+    H5S_t	*space = NULL;
+    hid_t       ret_value = FAIL;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Read the data space message and return a data space object */
+    if(NULL == (space = H5S_copy(dset->shared->space, FALSE, TRUE)))
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get data space")
+
+    /* Create an atom */
+    if((ret_value = H5I_register (H5I_DATASPACE, space, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register data space")
+
+done:
+    if(ret_value < 0) {
+        if(space!=NULL) {
+            if(H5S_close(space) < 0)
+                HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace")
+        } /* end if */
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D_get_space() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5D_get_type
+ *
+ * Purpose:	Returns and ID for the datatype of the dataset.
+ *
+ * Return:	Success:	ID for datatype
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Mohamad Chaarawi
+ *		March, 2012
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5D_get_type(H5D_t *dset)
+{
+    H5T_t	*dt = NULL;
+    hid_t       ret_value = FAIL;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Patch the datatype's "top level" file pointer */
+    if(H5T_patch_file(dset->shared->type, dset->oloc.file) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to patch datatype's file pointer")
+
+    /* Copy the dataset's datatype */
+    if(NULL == (dt = H5T_copy(dset->shared->type, H5T_COPY_REOPEN)))
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to copy datatype")
+
+    /* Mark any datatypes as being in memory now */
+    if(H5T_set_loc(dt, NULL, H5T_LOC_MEMORY) < 0)
+        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "invalid datatype location")
+
+    /* Lock copied type */
+    if(H5T_lock(dt, FALSE) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to lock transient datatype")
+
+    if((ret_value = H5I_register(H5I_DATATYPE, dt, TRUE)) < 0)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype")
+
+done:
+    if(ret_value < 0) {
+        if(dt && H5T_close(dt) < 0)
+            HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype")
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D_get_type() */
diff --git a/src/H5Dio.c b/src/H5Dio.c
index 27b5334..b0fc822 100644
--- a/src/H5Dio.c
+++ b/src/H5Dio.c
@@ -55,8 +55,8 @@
 static herr_t H5D__write(H5D_t *dataset, hid_t mem_type_id,
     const H5S_t *mem_space, const H5S_t *file_space, hid_t dset_xfer_plist,
     const void *buf);
-static herr_t H5D__pre_write(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
-	 hid_t file_space_id, hid_t dxpl_id, const void *buf);
+static herr_t H5D__pre_write(H5D_t *dset, hbool_t direct_write, hid_t mem_type_id, 
+    const H5S_t *mem_space, const H5S_t *file_space, hid_t dxpl_id, const void *buf);
 
 /* Setup/teardown routines */
 static herr_t H5D__ioinfo_init(H5D_t *dset,
@@ -212,16 +212,62 @@ herr_t
 H5Dwrite(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
 	 hid_t file_space_id, hid_t dxpl_id, const void *buf)
 {
+    H5D_t		   *dset = NULL;
+    H5P_genplist_t 	   *plist;      /* Property list pointer */
+    const H5S_t            *mem_space = NULL;
+    const H5S_t            *file_space = NULL;
+    hbool_t                 direct_write = FALSE;
     herr_t                  ret_value = SUCCEED;  /* Return value */
 
     FUNC_ENTER_API(FAIL)
     H5TRACE6("e", "iiiii*x", dset_id, mem_type_id, mem_space_id, file_space_id,
              dxpl_id, buf);
 
-    if(!dset_id)
+    /* check arguments */
+    if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
+    if(NULL == dset->oloc.file)
+	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file")
+
+    /* Get the default dataset transfer property list if the user didn't provide one */
+    if(H5P_DEFAULT == dxpl_id)
+        dxpl_id= H5P_DATASET_XFER_DEFAULT;
+    else
+        if(TRUE != H5P_isa_class(dxpl_id, H5P_DATASET_XFER))
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not xfer parms")
+
+    /* Get the dataset transfer property list */
+    if(NULL == (plist = (H5P_genplist_t *)H5I_object(dxpl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list")
+
+    /* Retrieve the 'direct write' flag */
+    if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_WRITE_FLAG_NAME, &direct_write) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error getting flag for direct chunk write")
 
-    if(H5D__pre_write(dset_id, mem_type_id, mem_space_id, file_space_id, dxpl_id, buf) < 0) 
+    /* Check dataspace selections if this is not a direct write */
+    if(!direct_write) {
+        if(mem_space_id < 0 || file_space_id < 0)
+	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+
+	if(H5S_ALL != mem_space_id) {
+	    if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE)))
+	        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+
+	    /* Check for valid selection */
+	    if(H5S_SELECT_VALID(mem_space) != TRUE)
+		HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "memory selection+offset not within extent")
+	} /* end if */
+	if(H5S_ALL != file_space_id) {
+	    if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE)))
+		HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+
+	    /* Check for valid selection */
+	    if(H5S_SELECT_VALID(file_space) != TRUE)
+		HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "file selection+offset not within extent")
+	} /* end if */
+    }
+
+    if(H5D__pre_write(dset, direct_write, mem_type_id, mem_space, file_space, dxpl_id, buf) < 0) 
 	HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't prepare for writing data")
 
 done:
@@ -242,39 +288,17 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__pre_write(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
-	 hid_t file_space_id, hid_t dxpl_id, const void *buf)
+H5D__pre_write(H5D_t *dset, hbool_t direct_write, hid_t mem_type_id, 
+         const H5S_t *mem_space, const H5S_t *file_space, 
+         hid_t dxpl_id, const void *buf)
 {
-    H5D_t		   *dset = NULL;
-    H5P_genplist_t 	   *plist;      /* Property list pointer */
-    hbool_t		    direct_write = FALSE;
     herr_t                  ret_value = SUCCEED;  /* Return value */
 
     FUNC_ENTER_STATIC
 
-    /* check arguments */
-    if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET)))
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
-    if(NULL == dset->oloc.file)
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file")
-
-    /* Get the default dataset transfer property list if the user didn't provide one */
-    if(H5P_DEFAULT == dxpl_id)
-        dxpl_id= H5P_DATASET_XFER_DEFAULT;
-    else
-        if(TRUE != H5P_isa_class(dxpl_id, H5P_DATASET_XFER))
-            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not xfer parms")
-
-    /* Get the dataset transfer property list */
-    if(NULL == (plist = (H5P_genplist_t *)H5I_object(dxpl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list")
-
-    /* Retrieve the 'direct write' flag */
-    if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_WRITE_FLAG_NAME, &direct_write) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error getting flag for direct chunk write")
-
     /* Direct chunk write */
     if(direct_write) {
+        H5P_genplist_t *plist;      /* Property list pointer */
         uint32_t direct_filters;
         hsize_t *direct_offset;
         uint32_t direct_datasize;
@@ -283,6 +307,10 @@ H5D__pre_write(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
 	hsize_t  internal_offset[H5O_LAYOUT_NDIMS];
 	int      i;
 
+        /* Get the dataset transfer property list */
+        if(NULL == (plist = (H5P_genplist_t *)H5I_object(dxpl_id)))
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list")
+
         if(H5D_CHUNKED != dset->shared->layout.type)
 	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a chunked dataset")
 
@@ -319,29 +347,6 @@ H5D__pre_write(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
 	    HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't write chunk directly")
     } /* end if */
     else {     /* Normal write */
-	const H5S_t *mem_space = NULL;
-	const H5S_t *file_space = NULL;
-
-        if(mem_space_id < 0 || file_space_id < 0)
-	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-
-	if(H5S_ALL != mem_space_id) {
-	    if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE)))
-	        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-
-	    /* Check for valid selection */
-	    if(H5S_SELECT_VALID(mem_space) != TRUE)
-		HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "memory selection+offset not within extent")
-	} /* end if */
-	if(H5S_ALL != file_space_id) {
-	    if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE)))
-		HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-
-	    /* Check for valid selection */
-	    if(H5S_SELECT_VALID(file_space) != TRUE)
-		HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "file selection+offset not within extent")
-	} /* end if */
-
         /* write raw data */
         if(H5D__write(dset, mem_type_id, mem_space, file_space, dxpl_id, buf) < 0)
 	    HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't write data")
diff --git a/src/H5Dprivate.h b/src/H5Dprivate.h
index 9b430ba..d8381e1 100644
--- a/src/H5Dprivate.h
+++ b/src/H5Dprivate.h
@@ -165,6 +165,9 @@ H5_DLL H5G_name_t *H5D_nameof(H5D_t *dataset);
 H5_DLL H5T_t *H5D_typeof(const H5D_t *dset);
 H5_DLL herr_t H5D_flush(const H5F_t *f, hid_t dxpl_id);
 H5_DLL hid_t H5D_get_create_plist(H5D_t *dset);
+H5_DLL hid_t H5D_get_access_plist(H5D_t *dset);
+H5_DLL hid_t H5D_get_space(H5D_t *dset);
+H5_DLL hid_t H5D_get_type(H5D_t *dset);
 
 /* Functions that operate on vlen data */
 H5_DLL herr_t H5D_vlen_reclaim(hid_t type_id, H5S_t *space, hid_t plist_id,
diff --git a/src/H5F.c b/src/H5F.c
index e45882d..ea48ff7 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -20,7 +20,7 @@
 #define H5F_PACKAGE		/*suppress error about including H5Fpkg	  */
 
 /* Interface initialization */
-#define H5_INTERFACE_INIT_FUNC	H5F_init_interface
+#define H5_INTERFACE_INIT_FUNC	H5F__init_pub_interface
 
 
 /***********/
@@ -41,19 +41,6 @@
 #include "H5SMprivate.h"	/* Shared Object Header Messages	*/
 #include "H5Tprivate.h"		/* Datatypes				*/
 
-/* Predefined file drivers */
-#include "H5FDcore.h"		/*temporary in-memory files		*/
-#include "H5FDfamily.h"		/*family of files			*/
-#include "H5FDlog.h"            /* sec2 driver with logging, for debugging */
-#include "H5FDmpi.h"            /* MPI-based file drivers		*/
-#include "H5FDmulti.h"		/*multiple files partitioned by mem usage */
-#include "H5FDsec2.h"		/*Posix unbuffered I/O			*/
-#include "H5FDstdio.h"		/* Standard C buffered I/O		*/
-#ifdef H5_HAVE_WINDOWS
-#include "H5FDwindows.h"        /* Windows buffered I/O     */
-#endif
-#include "H5FDdirect.h"         /*Linux direct I/O			*/
-
 
 /****************/
 /* Local Macros */
@@ -64,22 +51,6 @@
 /* Local Typedefs */
 /******************/
 
-/* Struct only used by functions H5F_get_objects and H5F_get_objects_cb */
-typedef struct H5F_olist_t {
-    H5I_type_t obj_type;        /* Type of object to look for */
-    hid_t      *obj_id_list;    /* Pointer to the list of open IDs to return */
-    size_t     *obj_id_count;   /* Number of open IDs */
-    struct {
-        hbool_t local;          /* Set flag for "local" file searches */
-        union {
-            H5F_file_t *shared; /* Pointer to shared file to look inside */
-            const H5F_t *file;  /* Pointer to file to look inside */
-        } ptr;
-    } file_info;
-    size_t     list_index;      /* Current index in open ID array */
-    size_t     max_nobjs;       /* Maximum # of IDs to put into array */
-} H5F_olist_t;
-
 
 /********************/
 /* Package Typedefs */
@@ -89,14 +60,7 @@ typedef struct H5F_olist_t {
 /********************/
 /* Local Prototypes */
 /********************/
-static herr_t H5F_get_objects(const H5F_t *f, unsigned types, size_t max_index, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr);
-static int H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key);
-static H5F_t *H5F_new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id,
-    hid_t fapl_id, H5FD_t *lf);
-static herr_t H5F_build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl,
-    const char *name, char ** /*out*/ actual_name);
-static herr_t H5F_dest(H5F_t *f, hid_t dxpl_id, hbool_t flush);
-static herr_t H5F_close(H5F_t *f);
+
 
 
 /*********************/
@@ -113,11 +77,6 @@ static herr_t H5F_close(H5F_t *f);
 /* Local Variables */
 /*******************/
 
-/* Declare a free list to manage the H5F_t struct */
-H5FL_DEFINE(H5F_t);
-
-/* Declare a free list to manage the H5F_file_t struct */
-H5FL_DEFINE(H5F_file_t);
 
 /* File ID class */
 static const H5I_class_t H5I_FILE_CLS[1] = {{
@@ -127,6 +86,35 @@ static const H5I_class_t H5I_FILE_CLS[1] = {{
     (H5I_free_t)H5F_close	/* Callback routine for closing objects of this class */
 }};
 
+
+/*--------------------------------------------------------------------------
+NAME
+   H5F__init_pub_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5F__init_pub_interface()
+RETURNS
+    Non-negative on success/Negative on failure
+DESCRIPTION
+    Initializes any interface-specific data or routines.  (Just calls
+    H5F_init() currently).
+
+--------------------------------------------------------------------------*/
+static herr_t
+H5F__init_pub_interface(void)
+{
+    herr_t          ret_value                = SUCCEED;   /* Return value */
+    FUNC_ENTER_STATIC
+
+    /*
+     * Initialize the atom group for the file IDs.
+     */
+    if(H5I_register_type(H5I_FILE_CLS) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to initialize interface")
+
+    ret_value = H5F_init();
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5F__init_pub_interface() */
 
 
 /*-------------------------------------------------------------------------
@@ -156,37 +144,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_init_interface
- *
- * Purpose:	Initialize interface-specific information.
- *
- * Return:	Success:	non-negative
- *		Failure:	negative
- *
- * Programmer:	Robb Matzke
- *              Friday, November 20, 1998
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5F_init_interface(void)
-{
-    herr_t ret_value = SUCCEED;                 /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /*
-     * Initialize the atom group for the file IDs.
-     */
-    if(H5I_register_type(H5I_FILE_CLS) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to initialize interface")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_init_interface() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5F_term_interface
  *
  * Purpose:	Terminate this interface: free all memory and reset global
@@ -312,109 +269,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_get_access_plist
- *
- * Purpose:	Returns a copy of the file access property list of the
- *		specified file.
- *
- *              NOTE: Make sure that, if you are going to overwrite
- *              information in the copied property list that was
- *              previously opened and assigned to the property list, then
- *              you must close it before overwriting the values.
- *
- * Return:	Success:	Object ID for a copy of the file access
- *				property list.
- *
- *		Failure:	FAIL
- *
- * Programmer:	Quincey Koziol
- *              Wednesday, May 25, 2005
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-hid_t
-H5F_get_access_plist(H5F_t *f, hbool_t app_ref)
-{
-    H5P_genplist_t *new_plist;              /* New property list */
-    H5P_genplist_t *old_plist;              /* Old property list */
-    void		*driver_info=NULL;
-    unsigned            efc_size = 0;
-    hid_t		ret_value = SUCCEED;
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Check args */
-    HDassert(f);
-
-    /* Make a copy of the default file access property list */
-    if(NULL == (old_plist = (H5P_genplist_t *)H5I_object(H5P_LST_FILE_ACCESS_ID_g)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-    if((ret_value = H5P_copy_plist(old_plist, app_ref)) < 0)
-	HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "can't copy file access property list")
-    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(ret_value)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-
-    /* Copy properties of the file access property list */
-    if(H5P_set(new_plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set initial metadata cache resize config.")
-    if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache number of slots")
-    if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache byte size")
-    if(H5P_set(new_plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set preempt read chunks")
-    if(H5P_set(new_plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set alignment threshold")
-    if(H5P_set(new_plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set alignment")
-    if(H5P_set(new_plist, H5F_ACS_GARBG_COLCT_REF_NAME, &(f->shared->gc_ref)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set garbage collect reference")
-    if(H5P_set(new_plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set metadata cache size")
-    if(H5P_set(new_plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't sieve buffer size")
-    if(H5P_set(new_plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set 'small data' cache size")
-    if(H5P_set(new_plist, H5F_ACS_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set 'latest format' flag")
-    if(f->shared->efc)
-        efc_size = H5F_efc_max_nfiles(f->shared->efc);
-    if(H5P_set(new_plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't set elink file cache size")
-
-    /*
-     * Since we're resetting the driver ID and info, close them if they
-     * exist in this new property list.
-     */
-    if(H5P_facc_close(ret_value, NULL) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTFREE, FAIL, "can't free the old driver information")
-
-    /* Increment the reference count on the driver ID and insert it into the property list */
-    if(H5I_inc_ref(f->shared->lf->driver_id, FALSE) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTINC, FAIL, "unable to increment ref count on VFL driver")
-    if(H5P_set(new_plist, H5F_ACS_FILE_DRV_ID_NAME, &(f->shared->lf->driver_id)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file driver ID")
-
-    /* Set the driver "info" in the property list */
-    driver_info = H5FD_fapl_get(f->shared->lf);
-    if(driver_info != NULL && H5P_set(new_plist, H5F_ACS_FILE_DRV_INFO_NAME, &driver_info) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file driver info")
-
-    /* Set the file close degree appropriately */
-    if(f->shared->fc_degree == H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->lf->cls->fc_degree)) < 0) {
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file close degree")
-    } else if(f->shared->fc_degree != H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->fc_degree)) < 0) {
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file close degree")
-    }
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_access_plist() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Fget_obj_count
  *
  * Purpose:	Public function returning the number of opened object IDs
@@ -456,38 +310,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:    H5F_get_obj_count
- *
- * Purpose:	Private function return the number of opened object IDs
- *		(files, datasets, groups, datatypes) in the same file.
- *
- * Return:      SUCCEED on success, FAIL on failure.
- *
- * Programmer:  Raymond Lu
- *              Wednesday, Dec 5, 2001
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref, size_t *obj_id_count_ptr)
-{
-    herr_t   ret_value = SUCCEED;
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Sanity check */
-    HDassert(obj_id_count_ptr);
-
-    /* Perform the query */
-    if((ret_value = H5F_get_objects(f, types, 0, NULL, app_ref, obj_id_count_ptr)) < 0)
-        HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_objects failed")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_obj_count() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Fget_object_ids
  *
  * Purpose:	Public function to return a list of opened object IDs.
@@ -536,253 +358,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:    H5F_get_obj_ids
- *
- * Purpose:     Private function to return a list of opened object IDs.
- *
- * Return:      Non-negative on success; can't fail.
- *
- * Programmer:  Raymond Lu
- *              Wednesday, Dec 5, 2001
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *oid_list, hbool_t app_ref, size_t *obj_id_count_ptr)
-{
-    herr_t ret_value = SUCCEED;              /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Sanity check */
-    HDassert(obj_id_count_ptr);
-
-    /* Perform the query */
-    if((ret_value = H5F_get_objects(f, types, max_objs, oid_list, app_ref, obj_id_count_ptr)) < 0)
-        HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_objects failed")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_obj_ids() */
-
-
-/*---------------------------------------------------------------------------
- * Function:	H5F_get_objects
- *
- * Purpose:	This function is called by H5F_get_obj_count or
- *		H5F_get_obj_ids to get number of object IDs and/or a
- *		list of opened object IDs (in return value).
- * Return:	Non-negative on success; Can't fail.
- *
- * Programmer:  Raymond Lu
- *              Wednesday, Dec 5, 2001
- *
- *---------------------------------------------------------------------------
- */
-static herr_t
-H5F_get_objects(const H5F_t *f, unsigned types, size_t max_nobjs, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr)
-{
-    size_t obj_id_count=0;      /* Number of open IDs */
-    H5F_olist_t olist;          /* Structure to hold search results */
-    herr_t ret_value = SUCCEED; /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* Sanity check */
-    HDassert(obj_id_count_ptr);
-
-    /* Set up search information */
-    olist.obj_id_list  = (max_nobjs==0 ? NULL : obj_id_list);
-    olist.obj_id_count = &obj_id_count;
-    olist.list_index   = 0;
-    olist.max_nobjs   = max_nobjs;
-
-    /* Determine if we are searching for local or global objects */
-    if(types & H5F_OBJ_LOCAL) {
-        olist.file_info.local = TRUE;
-        olist.file_info.ptr.file = f;
-    } /* end if */
-    else {
-        olist.file_info.local = FALSE;
-        olist.file_info.ptr.shared = f ? f->shared : NULL;
-    } /* end else */
-
-    /* Iterate through file IDs to count the number, and put their
-     * IDs on the object list.  */
-    if(types & H5F_OBJ_FILE) {
-        olist.obj_type = H5I_FILE;
-        if(H5I_iterate(H5I_FILE, H5F_get_objects_cb, &olist, app_ref) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(1)")
-    } /* end if */
-
-    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
-     * or the caller wants to get the list of IDs and the list isn't full,
-     * search through dataset IDs to count number of datasets, and put their
-     * IDs on the object list */
-    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
-        if (types & H5F_OBJ_DATASET) {
-            olist.obj_type = H5I_DATASET;
-            if(H5I_iterate(H5I_DATASET, H5F_get_objects_cb, &olist, app_ref) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(2)")
-        } /* end if */
-    } 
-
-    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
-     * or the caller wants to get the list of IDs and the list isn't full,
-     * search through group IDs to count number of groups, and put their
-     * IDs on the object list */
-    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
-        if(types & H5F_OBJ_GROUP) {
-            olist.obj_type = H5I_GROUP;
-            if(H5I_iterate(H5I_GROUP, H5F_get_objects_cb, &olist, app_ref) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(3)")
-        } /* end if */
-    } 
-
-    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
-     * or the caller wants to get the list of IDs and the list isn't full,
-     * search through datatype IDs to count number of named datatypes, and put their
-     * IDs on the object list */
-    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
-        if(types & H5F_OBJ_DATATYPE) {
-            olist.obj_type = H5I_DATATYPE;
-            if(H5I_iterate(H5I_DATATYPE, H5F_get_objects_cb, &olist, app_ref) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(4)")
-        } /* end if */
-    } 
-
-    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
-     * or the caller wants to get the list of IDs and the list isn't full,
-     * search through attribute IDs to count number of attributes, and put their
-     * IDs on the object list */
-    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) {
-        if(types & H5F_OBJ_ATTR) {
-            olist.obj_type = H5I_ATTR;
-            if(H5I_iterate(H5I_ATTR, H5F_get_objects_cb, &olist, app_ref) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(5)")
-        } /* end if */
-    }
- 
-    /* Set the number of objects currently open */
-    *obj_id_count_ptr = obj_id_count;
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_objects() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_get_objects_cb
- *
- * Purpose:	H5F_get_objects' callback function.  It verifies if an
- * 		object is in the file, and either count it or put its ID
- *		on the list.
- *
- * Return:      H5_ITER_STOP if the array of object IDs is filled up.
- *              H5_ITER_CONT otherwise.
- *
- * Programmer:  Raymond Lu
- *              Wednesday, Dec 5, 2001
- *
- *-------------------------------------------------------------------------
- */
-static int
-H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key)
-{
-    H5F_olist_t *olist = (H5F_olist_t *)key;    /* Alias for search info */
-    int         ret_value = H5_ITER_CONT;    /* Return value */
-    hbool_t     add_obj = FALSE;
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    HDassert(obj_ptr);
-    HDassert(olist);
-
-    /* Count file IDs */
-    if(olist->obj_type == H5I_FILE) {
-        if((olist->file_info.local &&
-                        (!olist->file_info.ptr.file || (olist->file_info.ptr.file && (H5F_t*)obj_ptr == olist->file_info.ptr.file) ))
-                ||  (!olist->file_info.local &&
-                        ( !olist->file_info.ptr.shared || (olist->file_info.ptr.shared && ((H5F_t*)obj_ptr)->shared == olist->file_info.ptr.shared) ))) {
-            add_obj = TRUE;
-	}
-    } /* end if */
-    else { /* either count opened object IDs or put the IDs on the list */
-        H5O_loc_t *oloc;        /* Group entry info for object */
-
-    	switch(olist->obj_type) {
-	    case H5I_ATTR:
-	        oloc = H5A_oloc((H5A_t *)obj_ptr);
-                break;
-
-	    case H5I_GROUP:
-	        oloc = H5G_oloc((H5G_t *)obj_ptr);
-                break;
-
-	    case H5I_DATASET:
-	        oloc = H5D_oloc((H5D_t *)obj_ptr);
-		break;
-
-	    case H5I_DATATYPE:
-                if(H5T_is_named((H5T_t*)obj_ptr)==TRUE)
-                    oloc = H5T_oloc((H5T_t*)obj_ptr);
-                else
-                    oloc = NULL;
-		break;
-
-	    case H5I_UNINIT:
-	    case H5I_BADID:
-	    case H5I_FILE:
-	    case H5I_DATASPACE:
-	    case H5I_REFERENCE:
-	    case H5I_VFL:
-	    case H5I_GENPROP_CLS:
-	    case H5I_GENPROP_LST:
-	    case H5I_ERROR_CLASS:
-	    case H5I_ERROR_MSG:
-	    case H5I_ERROR_STACK:
-	    case H5I_NTYPES:
-            default:
-                HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5_ITER_ERROR, "unknown data object")
-	} /* end switch */
-
-        if((olist->file_info.local &&
-                    ( (!olist->file_info.ptr.file && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE)
-                            || (!olist->file_info.ptr.file && olist->obj_type != H5I_DATATYPE)
-                            || (oloc && oloc->file == olist->file_info.ptr.file)))
-                || (!olist->file_info.local &&
-                    ((!olist->file_info.ptr.shared && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE)
-                            || (!olist->file_info.ptr.shared && olist->obj_type != H5I_DATATYPE)
-                            || (oloc && oloc->file && oloc->file->shared == olist->file_info.ptr.shared)))) {
-            add_obj = TRUE;
-    	} /* end if */
-    } /* end else */
-
-    if(TRUE==add_obj) {
-        /* Add the object's ID to the ID list, if appropriate */
-        if(olist->obj_id_list) {
-            olist->obj_id_list[olist->list_index] = obj_id;
-	    olist->list_index++;
-	} /* end if */
-
-        /* Increment the number of open objects */
-	if(olist->obj_id_count)
-            (*olist->obj_id_count)++;
-
-        /* Check if we've filled up the array.  Return H5_ITER_STOP only if
-         * we have filled up the array. Otherwise return H5_ITER_CONT(RET_VALUE is
-         * preset to H5_ITER_CONT) because H5I_iterate needs the return value of 
-         * H5_ITER_CONT to continue the iteration. */
-        if(olist->max_nobjs>0 && olist->list_index>=olist->max_nobjs)
-            HGOTO_DONE(H5_ITER_STOP)  /* Indicate that the iterator should stop */
-    }
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_objects_cb() */
-
-
-/*-------------------------------------------------------------------------
  * Function:    H5Fget_vfd_handle
  *
  * Purpose:     Returns a pointer to the file handle of the low-level file
@@ -845,8 +420,6 @@ done:
 htri_t
 H5Fis_hdf5(const char *name)
 {
-    H5FD_t      *file = NULL;           /* Low-level file struct */
-    haddr_t     sig_addr;               /* Address of hdf5 file signature */
     htri_t      ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -856,592 +429,17 @@ H5Fis_hdf5(const char *name)
     if(!name || !*name)
         HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "no file name specified")
 
-    /* Open the file at the virtual file layer */
-    if(NULL == (file = H5FD_open(name, H5F_ACC_RDONLY, H5P_FILE_ACCESS_DEFAULT, HADDR_UNDEF)))
-        HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "unable to open file")
-
-    /* The file is an hdf5 file if the hdf5 file signature can be found */
-    if(H5FD_locate_signature(file, H5AC_ind_dxpl_g, &sig_addr) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "unable to locate file signature")
-    ret_value = (HADDR_UNDEF != sig_addr);
+    /* call the private is_HDF5 function */
+    if((ret_value = H5F_is_hdf5(name)) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "unable open file")
 
 done:
-    /* Close the file */
-    if(file)
-        if(H5FD_close(file) < 0 && ret_value >= 0)
-            HDONE_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
 
     FUNC_LEAVE_API(ret_value)
 } /* end H5Fis_hdf5() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_new
- *
- * Purpose:	Creates a new file object and initializes it.  The
- *		H5Fopen and H5Fcreate functions then fill in various
- *		fields.	 If SHARED is a non-null pointer then the shared info
- *		to which it points has the reference count incremented.
- *		Otherwise a new, empty shared info struct is created and
- *		initialized with the specified file access property list.
- *
- * Errors:
- *
- * Return:	Success:	Ptr to a new file struct.
- *
- *		Failure:	NULL
- *
- * Programmer:	Robb Matzke
- *		matzke@llnl.gov
- *		Jul 18 1997
- *
- *-------------------------------------------------------------------------
- */
-static H5F_t *
-H5F_new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id, hid_t fapl_id, H5FD_t *lf)
-{
-    H5F_t	*f = NULL, *ret_value;
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    if(NULL == (f = H5FL_CALLOC(H5F_t)))
-	HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate top file structure")
-    f->file_id = -1;
-
-    if(shared) {
-        HDassert(lf == NULL);
-	f->shared = shared;
-    } /* end if */
-    else {
-        H5P_genplist_t *plist;          /* Property list */
-        unsigned        efc_size;       /* External file cache size */
-        size_t u;                       /* Local index variable */
-
-        HDassert(lf != NULL);
-        if(NULL == (f->shared = H5FL_CALLOC(H5F_file_t)))
-            HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate shared file structure")
-
-        f->shared->flags = flags;
-	f->shared->sohm_addr = HADDR_UNDEF;
-	f->shared->sohm_vers = HDF5_SHAREDHEADER_VERSION;
-        for(u = 0; u < NELMTS(f->shared->fs_addr); u++)
-            f->shared->fs_addr[u] = HADDR_UNDEF;
-	f->shared->accum.loc = HADDR_UNDEF;
-        f->shared->lf = lf;
-
-	/*
-	 * Copy the file creation and file access property lists into the
-	 * new file handle.  We do this early because some values might need
-	 * to change as the file is being opened.
-	 */
-        if(NULL == (plist = (H5P_genplist_t *)H5I_object(fcpl_id)))
-            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not property list")
-        f->shared->fcpl_id = H5P_copy_plist(plist, FALSE);
-
-        /* Get the FCPL values to cache */
-        if(H5P_get(plist, H5F_CRT_ADDR_BYTE_NUM_NAME, &f->shared->sizeof_addr) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for address")
-        if(H5P_get(plist, H5F_CRT_OBJ_BYTE_NUM_NAME, &f->shared->sizeof_size) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for object size")
-        if(H5P_get(plist, H5F_CRT_SHMSG_NINDEXES_NAME, &f->shared->sohm_nindexes) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get number of SOHM indexes")
-        HDassert(f->shared->sohm_nindexes < 255);
-
-        /* Get the FAPL values to cache */
-        if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id)))
-            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list")
-        if(H5P_get(plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get initial metadata cache resize config")
-        if(H5P_get(plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache number of slots")
-        if(H5P_get(plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache byte size")
-        if(H5P_get(plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get preempt read chunk")
-        if(H5P_get(plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment threshold")
-        if(H5P_get(plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment")
-        if(H5P_get(plist, H5F_ACS_GARBG_COLCT_REF_NAME,&(f->shared->gc_ref)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get garbage collect reference")
-        if(H5P_get(plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get sieve buffer size")
-        if(H5P_get(plist, H5F_ACS_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'latest format' flag")
-        if(H5P_get(plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get metadata cache size")
-        f->shared->meta_aggr.feature_flag = H5FD_FEAT_AGGREGATE_METADATA;
-        if(H5P_get(plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'small data' cache size")
-        f->shared->sdata_aggr.feature_flag = H5FD_FEAT_AGGREGATE_SMALLDATA;
-        if(H5P_get(plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get elink file cache size")
-        if(efc_size > 0)
-            if(NULL == (f->shared->efc = H5F_efc_create(efc_size)))
-                HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "can't create external file cache")
-
-        /* Get the VFD values to cache */
-        f->shared->maxaddr = H5FD_get_maxaddr(lf);
-        if(!H5F_addr_defined(f->shared->maxaddr))
-            HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad maximum address from VFD")
-        if(H5FD_get_feature_flags(lf, &f->shared->feature_flags) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get feature flags from VFD")
-        if(H5FD_get_fs_type_map(lf, f->shared->fs_type_map) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get free space type mapping from VFD")
-        if(H5MF_init_merge_flags(f) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "problem initializing free space merge flags")
-        f->shared->tmp_addr = f->shared->maxaddr;
-        /* Disable temp. space allocation for parallel I/O (for now) */
-        /* (When we've arranged to have the relocated metadata addresses (and
-         *      sizes) broadcast during the "end of epoch" metadata operations,
-         *      this can be enabled - QAK)
-         */
-        /* (This should be disabled when the metadata journaling branch is
-         *      merged into the trunk and journaling is enabled, at least until
-         *      we make it work. - QAK)
-         */
-        f->shared->use_tmp_space = !(IS_H5FD_MPI(f));
-
-	/*
-	 * Create a metadata cache with the specified number of elements.
-	 * The cache might be created with a different number of elements and
-	 * the access property list should be updated to reflect that.
-	 */
-	if(H5AC_create(f, &(f->shared->mdc_initCacheCfg)) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create metadata cache")
-
-        /* Create the file's "open object" information */
-        if(H5FO_create(f) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure")
-
-        /* Add new "shared" struct to list of open files */
-        if(H5F_sfile_add(f->shared) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to append to list of open files")
-    } /* end else */
-
-    f->shared->nrefs++;
-
-    /* Create the file's "top open object" information */
-    if(H5FO_top_create(f) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure")
-
-    /* Set return value */
-    ret_value = f;
-
-done:
-    if(!ret_value && f) {
-	if(!shared) {
-            /* Attempt to clean up some of the shared file structures */
-            if(f->shared->efc)
-                if(H5F_efc_destroy(f->shared->efc) < 0)
-                    HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, NULL, "can't destroy external file cache")
-            if(f->shared->fcpl_id > 0)
-                if(H5I_dec_ref(f->shared->fcpl_id) < 0)
-                    HDONE_ERROR(H5E_FILE, H5E_CANTDEC, NULL, "can't close property list")
-
-            f->shared = H5FL_FREE(H5F_file_t, f->shared);
-        } /* end if */
-	f = H5FL_FREE(H5F_t, f);
-    } /* end if */
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_new() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_dest
- *
- * Purpose:	Destroys a file structure.  This function flushes the cache
- *		but doesn't do any other cleanup other than freeing memory
- *		for the file struct.  The shared info for the file is freed
- *		only when its reference count reaches zero.
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Robb Matzke
- *		matzke@llnl.gov
- *		Jul 18 1997
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5F_dest(H5F_t *f, hid_t dxpl_id, hbool_t flush)
-{
-    herr_t	   ret_value = SUCCEED;         /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    if(1 == f->shared->nrefs) {
-        H5F_io_info_t fio_info;             /* I/O info for operation */
-
-        /* Flush at this point since the file will be closed.
-         * Only try to flush the file if it was opened with write access, and if
-         * the caller requested a flush.
-         */
-        if((f->shared->flags & H5F_ACC_RDWR) && flush)
-            if(H5F_flush(f, dxpl_id, TRUE) < 0)
-                HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush cache")
-
-        /* Release the external file cache */
-        if(f->shared->efc) {
-            if(H5F_efc_destroy(f->shared->efc) < 0)
-                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't destroy external file cache")
-            f->shared->efc = NULL;
-        } /* end if */
-
-        /* Release objects that depend on the superblock being initialized */
-        if(f->shared->sblock) {
-            /* Shutdown file free space manager(s) */
-            /* (We should release the free space information now (before truncating
-             *      the file and before the metadata cache is shut down) since the
-             *      free space manager is holding some data structures in memory
-             *      and also because releasing free space can shrink the file's
-             *      'eoa' value)
-             */
-            if(H5MF_close(f, dxpl_id) < 0)
-                /* Push error, but keep going*/
-                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file free space info")
-
-            /* Unpin the superblock, since we're about to destroy the cache */
-            if(H5AC_unpin_entry(f->shared->sblock) < 0)
-                /* Push error, but keep going*/
-                HDONE_ERROR(H5E_FSPACE, H5E_CANTUNPIN, FAIL, "unable to unpin superblock")
-            f->shared->sblock = NULL;
-        } /* end if */
- 
-        /* Remove shared file struct from list of open files */
-        if(H5F_sfile_remove(f->shared) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-
-        /* Shutdown the metadata cache */
-        if(H5AC_dest(f, dxpl_id))
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-
-        /*
-         * Do not close the root group since we didn't count it, but free
-         * the memory associated with it.
-         */
-        if(f->shared->root_grp) {
-            /* Free the root group */
-            if(H5G_root_free(f->shared->root_grp) < 0)
-                /* Push error, but keep going*/
-                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-            f->shared->root_grp = NULL;
-        } /* end if */
-
-        /* Set up I/O info for operation */
-        fio_info.f = f;
-        if(NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id)))
-            HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
-
-        /* Destroy other components of the file */
-        if(H5F__accum_reset(&fio_info, TRUE) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-        if(H5FO_dest(f) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-        f->shared->cwfs = (struct H5HG_heap_t **)H5MM_xfree(f->shared->cwfs);
-        if(H5G_node_close(f) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
-
-        /* Destroy file creation properties */
-        if(H5I_GENPROP_LST != H5I_get_type(f->shared->fcpl_id))
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_BADTYPE, FAIL, "not a property list")
-        if(H5I_dec_ref(f->shared->fcpl_id) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTDEC, FAIL, "can't close property list")
-
-        /* Only truncate the file on an orderly close, with write-access */
-        if(f->closing && (H5F_ACC_RDWR & H5F_INTENT(f))) {
-            /* Truncate the file to the current allocated size */
-            if(H5FD_truncate(f->shared->lf, dxpl_id, (unsigned)TRUE) < 0)
-                /* Push error, but keep going*/
-                HDONE_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "low level truncate failed")
-        } /* end if */
-
-        /* Close the file */
-        if(H5FD_close(f->shared->lf) < 0)
-            /* Push error, but keep going*/
-            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
-
-        /* Free mount table */
-        f->shared->mtab.child = (H5F_mount_t *)H5MM_xfree(f->shared->mtab.child);
-        f->shared->mtab.nalloc = 0;
-
-        /* Destroy shared file struct */
-        f->shared = (H5F_file_t *)H5FL_FREE(H5F_file_t, f->shared);
-
-    } else if(f->shared->nrefs > 0) {
-        /*
-         * There are other references to the shared part of the file.
-         * Only decrement the reference count.
-         */
-        --f->shared->nrefs;
-    }
-
-    /* Free the non-shared part of the file */
-    f->open_name = (char *)H5MM_xfree(f->open_name);
-    f->actual_name = (char *)H5MM_xfree(f->actual_name);
-    f->extpath = (char *)H5MM_xfree(f->extpath);
-    if(H5FO_top_dest(f) < 0)
-        HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "problems closing file")
-    f->shared = NULL;
-    f = H5FL_FREE(H5F_t, f);
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_dest() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_open
- *
- * Purpose:	Opens (or creates) a file.  This function understands the
- *		following flags which are similar in nature to the Posix
- *		open(2) flags.
- *
- *		H5F_ACC_RDWR:	Open with read/write access. If the file is
- *				currently open for read-only access then it
- *				will be reopened. Absence of this flag
- *				implies read-only access.
- *
- *		H5F_ACC_CREAT:	Create a new file if it doesn't exist yet.
- *				The permissions are 0666 bit-wise AND with
- *				the current umask.  H5F_ACC_WRITE must also
- *				be specified.
- *
- *		H5F_ACC_EXCL:	This flag causes H5F_open() to fail if the
- *				file already exists.
- *
- *		H5F_ACC_TRUNC:	The file is truncated and a new HDF5 superblock
- *				is written.  This operation will fail if the
- *				file is already open.
- *
- *		Unlinking the file name from the group directed graph while
- *		the file is opened causes the file to continue to exist but
- *		one will not be able to upgrade the file from read-only
- *		access to read-write access by reopening it. Disk resources
- *		for the file are released when all handles to the file are
- *		closed. NOTE: This paragraph probably only applies to Unix;
- *		deleting the file name in other OS's has undefined results.
- *
- *		The CREATE_PARMS argument is optional.	A null pointer will
- *		cause the default file creation parameters to be used.
- *
- *		The ACCESS_PARMS argument is optional.  A null pointer will
- *		cause the default file access parameters to be used.
- *
- * Return:	Success:	A new file pointer.
- *		Failure:	NULL
- *
- * Programmer:	Robb Matzke
- *		Tuesday, September 23, 1997
- *
- *-------------------------------------------------------------------------
- */
-H5F_t *
-H5F_open(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id,
-    hid_t dxpl_id)
-{
-    H5F_t              *file = NULL;        /*the success return value      */
-    H5F_file_t         *shared = NULL;      /*shared part of `file'         */
-    H5FD_t             *lf = NULL;          /*file driver part of `shared'  */
-    unsigned            tent_flags;         /*tentative flags               */
-    H5FD_class_t       *drvr;               /*file driver class info        */
-    H5P_genplist_t     *a_plist;            /*file access property list     */
-    H5F_close_degree_t  fc_degree;          /*file close degree             */
-    H5F_t              *ret_value;          /*actual return value           */
-
-    FUNC_ENTER_NOAPI(NULL)
-
-    /*
-     * If the driver has a `cmp' method then the driver is capable of
-     * determining when two file handles refer to the same file and the
-     * library can insure that when the application opens a file twice
-     * that the two handles coordinate their operations appropriately.
-     * Otherwise it is the application's responsibility to never open the
-     * same file more than once at a time.
-     */
-    if(NULL == (drvr = H5FD_get_class(fapl_id)))
-        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "unable to retrieve VFL class")
-
-    /*
-     * Opening a file is a two step process. First we try to open the
-     * file in a way which doesn't affect its state (like not truncating
-     * or creating it) so we can compare it with files that are already
-     * open. If that fails then we try again with the full set of flags
-     * (only if they're different than the original failed attempt).
-     * However, if the file driver can't distinquish between files then
-     * there's no reason to open the file tentatively because it's the
-     * application's responsibility to prevent this situation (there's no
-     * way for us to detect it here anyway).
-     */
-    if(drvr->cmp)
-	tent_flags = flags & ~(H5F_ACC_CREAT|H5F_ACC_TRUNC|H5F_ACC_EXCL);
-    else
-	tent_flags = flags;
-
-    if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) {
-	if(tent_flags == flags) {
-#ifndef H5_USING_MEMCHECKER
-            time_t mytime = HDtime(NULL);
-
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags)
-#else /* H5_USING_MEMCHECKER */
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags)
-#endif /* H5_USING_MEMCHECKER */
-        } /* end if */
-        H5E_clear_stack(NULL);
-	tent_flags = flags;
-	if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) {
-#ifndef H5_USING_MEMCHECKER
-            time_t mytime = HDtime(NULL);
-
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags)
-#else /* H5_USING_MEMCHECKER */
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags)
-#endif /* H5_USING_MEMCHECKER */
-        } /* end if */
-    } /* end if */
-
-    /* Is the file already open? */
-    if((shared = H5F_sfile_search(lf)) != NULL) {
-	/*
-	 * The file is already open, so use that one instead of the one we
-	 * just opened. We only one one H5FD_t* per file so one doesn't
-	 * confuse the other.  But fail if this request was to truncate the
-	 * file (since we can't do that while the file is open), or if the
-	 * request was to create a non-existent file (since the file already
-	 * exists), or if the new request adds write access (since the
-	 * readers don't expect the file to change under them).
-	 */
-	if(H5FD_close(lf) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info")
-	if(flags & H5F_ACC_TRUNC)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to truncate a file which is already open")
-	if(flags & H5F_ACC_EXCL)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file exists")
-	if((flags & H5F_ACC_RDWR) && 0 == (shared->flags & H5F_ACC_RDWR))
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is already open for read-only")
-
-        /* Allocate new "high-level" file struct */
-        if((file = H5F_new(shared, flags, fcpl_id, fapl_id, NULL)) == NULL)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object")
-    } /* end if */
-    else {
-        /* Check if tentative open was good enough */
-        if(flags != tent_flags) {
-            /*
-             * This file is not yet open by the library and the flags we used to
-             * open it are different than the desired flags. Close the tentative
-             * file and open it for real.
-             */
-            if(H5FD_close(lf) < 0) {
-                file = NULL; /*to prevent destruction of wrong file*/
-                HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info")
-            } /* end if */
-            if(NULL == (lf = H5FD_open(name, flags, fapl_id, HADDR_UNDEF))) {
-                file = NULL; /*to prevent destruction of wrong file*/
-                HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file")
-            } /* end if */
-        } /* end if */
-
-        if(NULL == (file = H5F_new(NULL, flags, fcpl_id, fapl_id, lf)))
-            HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object")
-    } /* end else */
-
-    /* Retain the name the file was opened with */
-    file->open_name = H5MM_xstrdup(name);
-
-    /* Short cuts */
-    shared = file->shared;
-    lf = shared->lf;
-
-    /*
-     * Read or write the file superblock, depending on whether the file is
-     * empty or not.
-     */
-    if(0 == H5FD_get_eof(lf) && (flags & H5F_ACC_RDWR)) {
-        /*
-         * We've just opened a fresh new file (or truncated one). We need
-         * to create & write the superblock.
-         */
-
-        /* Initialize information about the superblock and allocate space for it */
-        /* (Writes superblock extension messages, if there are any) */
-        if(H5F_super_init(file, dxpl_id) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to allocate file superblock")
-
-        /* Create and open the root group */
-        /* (This must be after the space for the superblock is allocated in
-         *      the file, since the superblock must be at offset 0)
-         */
-        if(H5G_mkroot(file, dxpl_id, TRUE) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create/open root group")
-    } else if (1 == shared->nrefs) {
-	/* Read the superblock if it hasn't been read before. */
-        if(H5F_super_read(file, dxpl_id) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_READERROR, NULL, "unable to read superblock")
-
-	/* Open the root group */
-	if(H5G_mkroot(file, dxpl_id, FALSE) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to read root group")
-    } /* end if */
-
-    /* Get the file access property list, for future queries */
-    if(NULL == (a_plist = (H5P_genplist_t *)H5I_object(fapl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list")
-
-    /*
-     * Decide the file close degree.  If it's the first time to open the
-     * file, set the degree to access property list value; if it's the
-     * second time or later, verify the access property list value matches
-     * the degree in shared file structure.
-     */
-    if(H5P_get(a_plist, H5F_ACS_CLOSE_DEGREE_NAME, &fc_degree) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file close degree")
-
-    if(shared->nrefs == 1) {
-        if(fc_degree == H5F_CLOSE_DEFAULT)
-            shared->fc_degree = lf->cls->fc_degree;
-        else
-            shared->fc_degree = fc_degree;
-    } else if(shared->nrefs > 1) {
-        if(fc_degree == H5F_CLOSE_DEFAULT && shared->fc_degree != lf->cls->fc_degree)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match")
-        if(fc_degree != H5F_CLOSE_DEFAULT && fc_degree != shared->fc_degree)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match")
-    } /* end if */
-
-    /* Formulate the absolute path for later search of target file for external links */
-    if(H5_build_extpath(name, &file->extpath) < 0)
-	HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build extpath")
-
-    /* Formulate the actual file name, after following symlinks, etc. */
-    if(H5F_build_actual_name(file, a_plist, name, &file->actual_name) < 0)
-	HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build actual name")
-
-    /* Success */
-    ret_value = file;
-
-done:
-    if(!ret_value && file)
-        if(H5F_dest(file, dxpl_id, FALSE) < 0)
-            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, NULL, "problems closing file")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_open() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Fcreate
  *
  * Purpose:	This is the primary function for creating HDF5 files . The
@@ -1736,297 +734,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_flush
- *
- * Purpose:	Flushes cached data.
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Robb Matzke
- *		matzke@llnl.gov
- *		Aug 29 1997
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing)
-{
-    H5F_io_info_t fio_info;             /* I/O info for operation */
-    herr_t   ret_value = SUCCEED;       /* Return value */
-
-    FUNC_ENTER_NOAPI(FAIL)
-
-    /* Sanity check arguments */
-    HDassert(f);
-
-    /* Flush any cached dataset storage raw data */
-    if(H5D_flush(f, dxpl_id) < 0)
-        /* Push error, but keep going*/
-        HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush dataset cache")
-
-    /* Release any space allocated to space aggregators, so that the eoa value
-     *  corresponds to the end of the space written to in the file.
-     */
-    /* (needs to happen before cache flush, with superblock write, since the
-     *  'eoa' value is written in superblock -QAK)
-     */
-    if(H5MF_free_aggrs(f, dxpl_id) < 0)
-        /* Push error, but keep going*/
-        HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file space")
-
-    /* Flush the entire metadata cache */
-    if(H5AC_flush(f, dxpl_id) < 0)
-        /* Push error, but keep going*/
-        HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache")
-
-    /* Set up I/O info for operation */
-    fio_info.f = f;
-    if(NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id)))
-        HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
-
-    /* Flush out the metadata accumulator */
-    if(H5F__accum_flush(&fio_info) < 0)
-        /* Push error, but keep going*/
-        HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush metadata accumulator")
-
-    /* Flush file buffers to disk. */
-    if(H5FD_flush(f->shared->lf, dxpl_id, closing) < 0)
-        /* Push error, but keep going*/
-        HDONE_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level flush failed")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_flush() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_close
- *
- * Purpose:	Closes a file or causes the close operation to be pended.
- *		This function is called two ways: from the API it gets called
- *		by H5Fclose->H5I_dec_ref->H5F_close when H5I_dec_ref()
- *		decrements the file ID reference count to zero.  The file ID
- *		is removed from the H5I_FILE group by H5I_dec_ref() just
- *		before H5F_close() is called. If there are open object
- *		headers then the close is pended by moving the file to the
- *		H5I_FILE_CLOSING ID group (the f->closing contains the ID
- *		assigned to file).
- *
- *		This function is also called directly from H5O_close() when
- *		the last object header is closed for the file and the file
- *		has a pending close.
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Robb Matzke
- *		Tuesday, September 23, 1997
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5F_close(H5F_t *f)
-{
-    herr_t	        ret_value = SUCCEED;    /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->file_id > 0);   /* This routine should only be called when a file ID's ref count drops to zero */
-
-    /* Perform checks for "semi" file close degree here, since closing the
-     * file is not allowed if there are objects still open */
-    if(f->shared->fc_degree == H5F_CLOSE_SEMI) {
-        unsigned nopen_files = 0;       /* Number of open files in file/mount hierarchy */
-        unsigned nopen_objs = 0;        /* Number of open objects in file/mount hierarchy */
-
-        /* Get the number of open objects and open files on this file/mount hierarchy */
-        if(H5F_mount_count_ids(f, &nopen_files, &nopen_objs) < 0)
-            HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy")
-
-        /* If there are no other file IDs open on this file/mount hier., but
-         * there are still open objects, issue an error and bail out now,
-         * without decrementing the file ID's reference count and triggering
-         * a "real" attempt at closing the file */
-        if(nopen_files == 1 && nopen_objs > 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, there are objects still open")
-    } /* end if */
-
-    /* Reset the file ID for this file */
-    f->file_id = -1;
-
-    /* Attempt to close the file/mount hierarchy */
-    if(H5F_try_close(f) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_close() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_try_close
- *
- * Purpose:	Attempts to close a file due to one of several actions:
- *                      - The reference count on the file ID dropped to zero
- *                      - The last open object was closed in the file
- *                      - The file was unmounted
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Quincey Koziol
- *		Tuesday, July 19, 2005
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_try_close(H5F_t *f)
-{
-    unsigned            nopen_files = 0;        /* Number of open files in file/mount hierarchy */
-    unsigned            nopen_objs = 0;         /* Number of open objects in file/mount hierarchy */
-    herr_t	        ret_value = SUCCEED;    /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    /* Check if this file is already in the process of closing */
-    if(f->closing)
-        HGOTO_DONE(SUCCEED)
-
-    /* Get the number of open objects and open files on this file/mount hierarchy */
-    if(H5F_mount_count_ids(f, &nopen_files, &nopen_objs) < 0)
-        HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy")
-
-    /*
-     * Close file according to close degree:
-     *
-     *  H5F_CLOSE_WEAK:	if there are still objects open, wait until
-     *			they are all closed.
-     *  H5F_CLOSE_SEMI:	if there are still objects open, return fail;
-     *			otherwise, close file.
-     *  H5F_CLOSE_STRONG:	if there are still objects open, close them
-     *			first, then close file.
-     */
-    switch(f->shared->fc_degree) {
-        case H5F_CLOSE_WEAK:
-            /*
-             * If file or object IDS are still open then delay deletion of
-             * resources until they have all been closed.  Flush all
-             * caches and update the object header anyway so that failing to
-             * close all objects isn't a major problem.
-             */
-            if((nopen_files + nopen_objs) > 0)
-                HGOTO_DONE(SUCCEED)
-            break;
-
-        case H5F_CLOSE_SEMI:
-            /* Can leave safely if file IDs are still open on this file */
-            if(nopen_files > 0)
-                HGOTO_DONE(SUCCEED)
-
-            /* Sanity check: If close degree if "semi" and we have gotten this
-             * far and there are objects left open, bail out now */
-            HDassert(nopen_files == 0 && nopen_objs == 0);
-
-            /* If we've gotten this far (ie. there are no open objects in the file), fall through to flush & close */
-            break;
-
-        case H5F_CLOSE_STRONG:
-            /* If there are other open files in the hierarchy, we can leave now */
-            if(nopen_files > 0)
-                HGOTO_DONE(SUCCEED)
-
-            /* If we've gotten this far (ie. there are no open file IDs in the file/mount hierarchy), fall through to flush & close */
-            break;
-
-        case H5F_CLOSE_DEFAULT:
-        default:
-            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, unknown file close degree")
-    } /* end switch */
-
-    /* Mark this file as closing (prevents re-entering file shutdown code below) */
-    f->closing = TRUE;
-
-    /* If the file close degree is "strong", close all the open objects in this file */
-    if(f->shared->fc_degree == H5F_CLOSE_STRONG) {
-        HDassert(nopen_files ==  0);
-
-        /* Forced close of all opened objects in this file */
-        if(f->nopen_objs > 0) {
-            size_t obj_count;       /* # of open objects */
-            hid_t objs[128];        /* Array of objects to close */
-            herr_t result;          /* Local result from obj ID query */
-            size_t u;               /* Local index variable */
-
-            /* Get the list of IDs of open dataset, group, & attribute objects */
-            while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATASET | H5F_OBJ_GROUP | H5F_OBJ_ATTR, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0
-                    && obj_count != 0 ) {
-
-                /* Try to close all the open objects in this file */
-                for(u = 0; u < obj_count; u++)
-                    if(H5I_dec_ref(objs[u]) < 0)
-                        HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object")
-            } /* end while */
-            if(result < 0)
-                HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(1)")
-
-            /* Get the list of IDs of open named datatype objects */
-            /* (Do this separately from the dataset & attribute IDs, because
-             * they could be using one of the named datatypes and then the
-             * open named datatype ID will get closed twice)
-             */
-            while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATATYPE, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0
-                    && obj_count != 0) {
-
-                /* Try to close all the open objects in this file */
-                for(u = 0; u < obj_count; u++)
-                    if(H5I_dec_ref(objs[u]) < 0)
-                        HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object")
-            } /* end while */
-            if(result < 0)
-                HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(2)")
-        } /* end if */
-    } /* end if */
-
-    /* Check if this is a child file in a mounting hierarchy & proceed up the
-     * hierarchy if so.
-     */
-    if(f->parent)
-        if(H5F_try_close(f->parent) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close parent file")
-
-    /* Unmount and close each child before closing the current file. */
-    if(H5F_close_mounts(f) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't unmount child files")
-
-    /* If there is more than one reference to the shared file struct and the
-     * file has an external file cache, we should see if it can be closed.  This
-     * can happen if a cycle is formed with external file caches */
-    if(f->shared->efc && (f->shared->nrefs > 1))
-        if(H5F_efc_try_close(f) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't attempt to close EFC")
-
-    /* Delay flush until the shared file struct is closed, in H5F_dest.  If the
-     * application called H5Fclose, it would have been flushed in that function
-     * (unless it will have been flushed in H5F_dest anyways). */
-
-    /*
-     * Destroy the H5F_t struct and decrement the reference count for the
-     * shared H5F_file_t struct. If the reference count for the H5F_file_t
-     * struct reaches zero then destroy it also.
-     */
-    if(H5F_dest(f, H5AC_dxpl_id, TRUE) < 0)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "problems closing file")
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_try_close() */
-
-
-/*-------------------------------------------------------------------------
  * Function:	H5Fclose
  *
  * Purpose:	This function closes the file specified by FILE_ID by
@@ -2191,382 +898,6 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_get_id
- *
- * Purpose:	Get the file ID, incrementing it, or "resurrecting" it as
- *              appropriate.
- *
- * Return:	Non-negative on success/Negative on failure
- *
- * Programmer:	Raymond Lu
- *		Oct 29, 2003
- *
- *-------------------------------------------------------------------------
- */
-hid_t
-H5F_get_id(H5F_t *file, hbool_t app_ref)
-{
-    hid_t       ret_value;
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    HDassert(file);
-
-    if(file->file_id == -1) {
-        /* Get an atom for the file */
-        if((file->file_id = H5I_register(H5I_FILE, file, app_ref)) < 0)
-	    HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to atomize file")
-    } else {
-        /* Increment reference count on atom. */
-        if(H5I_inc_ref(file->file_id, app_ref) < 0)
-            HGOTO_ERROR(H5E_ATOM, H5E_CANTSET, FAIL, "incrementing file ID failed")
-    } /* end else */
-
-    ret_value = file->file_id;
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5F_get_id() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_incr_nopen_objs
- *
- * Purpose:	Increment the number of open objects for a file.
- *
- * Return:	Success:	The number of open objects, after the increment
- *
- * 		Failure:	(can't happen)
- *
- * Programmer:	Quincey Koziol
- *		koziol@hdfgroup.org
- *		Mar  6 2007
- *
- *-------------------------------------------------------------------------
- */
-unsigned
-H5F_incr_nopen_objs(H5F_t *f)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(f);
-
-    FUNC_LEAVE_NOAPI(++f->nopen_objs)
-} /* end H5F_incr_nopen_objs() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_decr_nopen_objs
- *
- * Purpose:	Decrement the number of open objects for a file.
- *
- * Return:	Success:	The number of open objects, after the decrement
- *
- * 		Failure:	(can't happen)
- *
- * Programmer:	Quincey Koziol
- *		koziol@hdfgroup.org
- *		Mar  6 2007
- *
- *-------------------------------------------------------------------------
- */
-unsigned
-H5F_decr_nopen_objs(H5F_t *f)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(f);
-
-    FUNC_LEAVE_NOAPI(--f->nopen_objs)
-} /* end H5F_decr_nopen_objs() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_build_actual_name
- *
- * Purpose:	Retrieve the name of a file, after following symlinks, etc.
- *
- * Note:	Currently only working for "POSIX I/O compatible" VFDs
- *
- * Return:	Success:        0
- *		Failure:	-1
- *
- * Programmer:	Quincey Koziol
- *		November 25, 2009
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5F_build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl, const char *name,
-    char **actual_name/*out*/)
-{
-    hid_t       new_fapl_id = -1;       /* ID for duplicated FAPL */
-    herr_t      ret_value = SUCCEED;    /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(fapl);
-    HDassert(name);
-    HDassert(actual_name);
-
-    /* Clear actual name pointer to begin with */
-    *actual_name = NULL;
-
-/* Assume that if the OS can't create symlinks, that we don't need to worry
- *      about resolving them either. -QAK
- */
-#ifdef H5_HAVE_SYMLINK
-    /* Check for POSIX I/O compatible file handle */
-    if(H5F_HAS_FEATURE(f, H5FD_FEAT_POSIX_COMPAT_HANDLE)) {
-        h5_stat_t lst;   /* Stat info from lstat() call */
-
-        /* Call lstat() on the file's name */
-        if(HDlstat(name, &lst) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve stat info for file")
-
-        /* Check for symbolic link */
-        if(S_IFLNK == (lst.st_mode & S_IFMT)) {
-            H5P_genplist_t *new_fapl;   /* Duplicated FAPL */
-            int *fd;                    /* POSIX I/O file descriptor */
-            h5_stat_t st;               /* Stat info from stat() call */
-            h5_stat_t fst;              /* Stat info from fstat() call */
-            char realname[PATH_MAX];    /* Fully resolved path name of file */
-            hbool_t want_posix_fd;      /* Flag for retrieving file descriptor from VFD */
-
-            /* Perform a sanity check that the file or link wasn't switched
-             * between when we opened it and when we called lstat().  This is
-             * according to the security best practices for lstat() documented
-             * here: https://www.securecoding.cert.org/confluence/display/seccode/POS35-C.+Avoid+race+conditions+while+checking+for+the+existence+of+a+symbolic+link
-             */
-
-            /* Copy the FAPL object to modify */
-            if((new_fapl_id = H5P_copy_plist(fapl, FALSE)) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_CANTCOPY, FAIL, "unable to copy file access property list")
-            if(NULL == (new_fapl = (H5P_genplist_t *)H5I_object(new_fapl_id)))
-                HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "can't get property list")
-
-            /* Set the character encoding on the new property list */
-            want_posix_fd = TRUE;
-            if(H5P_set(new_fapl, H5F_ACS_WANT_POSIX_FD_NAME, &want_posix_fd) < 0)
-                HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set character encoding")
-
-            /* Retrieve the file handle */
-            if(H5F_get_vfd_handle(f, new_fapl_id, (void **)&fd) < 0)
-                HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve POSIX file descriptor")
-
-            /* Stat the filename we're resolving */
-            if(HDstat(name, &st) < 0)
-                HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to stat file")
-
-            /* Stat the file we opened */
-            if(HDfstat(*fd, &fst) < 0)
-                HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to fstat file")
-
-            /* Verify that the files are really the same */
-            if(st.st_mode != fst.st_mode || st.st_ino != fst.st_ino || st.st_dev != fst.st_dev)
-                HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "files' st_ino or st_dev fields changed!")
-
-            /* Get the resolved path for the file name */
-            if(NULL == HDrealpath(name, realname))
-                HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve real path for file")
-
-            /* Duplicate the resolved path for the file name */
-            if(NULL == (*actual_name = (char *)H5MM_strdup(realname)))
-                HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate real path")
-        } /* end if */
-    } /* end if */
-#endif /* H5_HAVE_SYMLINK */
-
-    /* Check if we've resolved the file's name */
-    if(NULL == *actual_name) {
-        /* Just duplicate the name used to open the file */
-        if(NULL == (*actual_name = (char *)H5MM_strdup(name)))
-            HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate open name")
-    } /* end else */
-
-done:
-    /* Close the property list */
-    if(new_fapl_id > 0)
-        if(H5I_dec_app_ref(new_fapl_id) < 0)
-            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "can't close duplicated FAPL")
-
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* H5F_build_actual_name() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_addr_encode_len
- *
- * Purpose:	Encodes an address into the buffer pointed to by *PP and
- *		then increments the pointer to the first byte after the
- *		address.  An undefined value is stored as all 1's.
- *
- * Return:	void
- *
- * Programmer:	Robb Matzke
- *		Friday, November  7, 1997
- *
- *-------------------------------------------------------------------------
- */
-void
-H5F_addr_encode_len(size_t addr_len, uint8_t **pp/*in,out*/, haddr_t addr)
-{
-    unsigned    u;              /* Local index variable */
-
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(addr_len);
-    HDassert(pp && *pp);
-
-    if(H5F_addr_defined(addr)) {
-	for(u = 0; u < addr_len; u++) {
-	    *(*pp)++ = (uint8_t)(addr & 0xff);
-	    addr >>= 8;
-	} /* end for */
-	HDassert("overflow" && 0 == addr);
-    } /* end if */
-    else {
-	for(u = 0; u < addr_len; u++)
-	    *(*pp)++ = 0xff;
-    } /* end else */
-
-    FUNC_LEAVE_NOAPI_VOID
-} /* end H5F_addr_encode_len() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_addr_encode
- *
- * Purpose:	Encodes an address into the buffer pointed to by *PP and
- *		then increments the pointer to the first byte after the
- *		address.  An undefined value is stored as all 1's.
- *
- * Return:	void
- *
- * Programmer:	Robb Matzke
- *		Friday, November  7, 1997
- *
- *-------------------------------------------------------------------------
- */
-void
-H5F_addr_encode(const H5F_t *f, uint8_t **pp/*in,out*/, haddr_t addr)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(f);
-
-    H5F_addr_encode_len(H5F_SIZEOF_ADDR(f), pp, addr);
-
-    FUNC_LEAVE_NOAPI_VOID
-} /* end H5F_addr_encode() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_addr_decode_len
- *
- * Purpose:	Decodes an address from the buffer pointed to by *PP and
- *		updates the pointer to point to the next byte after the
- *		address.
- *
- *		If the value read is all 1's then the address is returned
- *		with an undefined value.
- *
- * Return:	void
- *
- * Programmer:	Robb Matzke
- *		Friday, November  7, 1997
- *
- *-------------------------------------------------------------------------
- */
-void
-H5F_addr_decode_len(size_t addr_len, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/)
-{
-    hbool_t	    all_zero = TRUE;    /* True if address was all zeroes */
-    unsigned	    u;          /* Local index variable */
-
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(addr_len);
-    HDassert(pp && *pp);
-    HDassert(addr_p);
-
-    /* Reset value in destination */
-    *addr_p = 0;
-
-    /* Decode bytes from address */
-    for(u = 0; u < addr_len; u++) {
-        uint8_t	    c;          /* Local decoded byte */
-
-        /* Get decoded byte (and advance pointer) */
-	c = *(*pp)++;
-
-        /* Check for non-undefined address byte value */
-	if(c != 0xff)
-            all_zero = FALSE;
-
-	if(u < sizeof(*addr_p)) {
-            haddr_t	    tmp = c;    /* Local copy of address, for casting */
-
-            /* Shift decoded byte to correct position */
-	    tmp <<= (u * 8);	/*use tmp to get casting right */
-
-            /* Merge into already decoded bytes */
-	    *addr_p |= tmp;
-	} /* end if */
-        else
-            if(!all_zero)
-                HDassert(0 == **pp);	/*overflow */
-    } /* end for */
-
-    /* If 'all_zero' is still TRUE, the address was entirely composed of '0xff'
-     *  bytes, which is the encoded form of 'HADDR_UNDEF', so set the destination
-     *  to that value */
-    if(all_zero)
-        *addr_p = HADDR_UNDEF;
-
-    FUNC_LEAVE_NOAPI_VOID
-} /* end H5F_addr_decode_len() */
-
-
-/*-------------------------------------------------------------------------
- * Function:	H5F_addr_decode
- *
- * Purpose:	Decodes an address from the buffer pointed to by *PP and
- *		updates the pointer to point to the next byte after the
- *		address.
- *
- *		If the value read is all 1's then the address is returned
- *		with an undefined value.
- *
- * Return:	void
- *
- * Programmer:	Robb Matzke
- *		Friday, November  7, 1997
- *
- *-------------------------------------------------------------------------
- */
-void
-H5F_addr_decode(const H5F_t *f, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    HDassert(f);
-
-    H5F_addr_decode_len(H5F_SIZEOF_ADDR(f), pp, addr_p);
-
-    FUNC_LEAVE_NOAPI_VOID
-} /* end H5F_addr_decode() */
-
-
-/*-------------------------------------------------------------------------
  * Function:    H5Fget_freespace
  *
  * Purpose:     Retrieves the amount of free space in the file.
@@ -2694,8 +1025,6 @@ ssize_t
 H5Fget_file_image(hid_t file_id, void *buf_ptr, size_t buf_len)
 {
     H5F_t      *file;                   /* File object for file ID */
-    H5FD_t     *fd_ptr;                 /* file driver */
-    haddr_t     eoa;                    /* End of file address */
     ssize_t     ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -2704,79 +1033,11 @@ H5Fget_file_image(hid_t file_id, void *buf_ptr, size_t buf_len)
     /* Check args */
     if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file ID")
-    if(!file || !file->shared || !file->shared->lf)
-        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file_id yields invalid file pointer")
-    fd_ptr = file->shared->lf;
-    if(!fd_ptr->cls)
-        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "fd_ptr yields invalid class pointer")
-
-    /* the address space used by the split and multi file drivers is not
-     * a good fit for this call.  Since the plan is to depreciate these
-     * drivers anyway, don't bother to do a "force fit".
-     *
-     * The following clause tests for the multi file driver, and fails
-     * if the supplied file has the multi file driver as its top level
-     * file driver.  However, this test will not work if there is some
-     * other file driver sitting on top of the multi file driver.
-     *
-     * I'm not sure if this is possible at present, but in all likelyhood,
-     * it will become possible in the future.  On the other hand, we may
-     * remove the split/multi file drivers before then.
-     *
-     * I am leaving this solution in for now, but we should review it,
-     * and improve the solution if necessary.
-     *
-     *                                          JRM -- 11/11/22
-     */
-    if(HDstrcmp(fd_ptr->cls->name, "multi") == 0)
-        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Not supported for multi file driver.")
-
-    /* While the family file driver is conceptually fully compatible 
-     * with the get file image operation, it sets a file driver message
-     * in the super block that prevents the image being opened with any
-     * driver other than the family file driver.  Needless to say, this
-     * rather defeats the purpose of the get file image operation.
-     *
-     * While this problem is quire solvable, the required time and 
-     * resources are lacking at present.  Hence, for now, we don't
-     * allow the get file image operation to be perfomed on files 
-     * opened with the family file driver.
-     *
-     * Observe that the following test only looks at the top level 
-     * driver, and fails if there is some other driver sitting on to
-     * of the family file driver.  
-     *
-     * I don't think this can happen at present, but that may change
-     * in the future.
-     *                                   JRM -- 12/21/11
-     */
-    if(HDstrcmp(fd_ptr->cls->name, "family") == 0)
-        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "Not supported for family file driver.")
-
-
-    /* Go get the actual file size */
-    if(HADDR_UNDEF == (eoa = H5FD_get_eoa(file->shared->lf, H5FD_MEM_DEFAULT)))
-        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get file size")
-
-    /* set ret_value = to eoa -- will overwrite this if appropriate */
-    ret_value = (ssize_t)eoa;
-
-    /* test to see if a buffer was provided -- if not, we are done */
-    if(buf_ptr != NULL) {
-        size_t	space_needed;		/* size of file image */
 
-        /* Check for buffer too small */
-        if((haddr_t)buf_len < eoa)
-            HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "supplied buffer too small")
+    /* call private get_file_image function */
+    if((ret_value = H5F_get_file_image(file, buf_ptr, buf_len)) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get file image")
 
-        space_needed = (size_t)eoa;
-
-        /* read in the file image */
-        /* (Note compensation for base address addition in internal routine) */
-        if(H5FD_read(fd_ptr, H5AC_ind_dxpl_g, H5FD_MEM_DEFAULT, 0, space_needed, buf_ptr) < 0)
-            HGOTO_ERROR(H5E_FILE, H5E_READERROR, FAIL, "file image read request failed")
-    } /* end if */
-    
 done:
     FUNC_LEAVE_API(ret_value)
 } /* H5Fget_file_image() */
@@ -3153,150 +1414,3 @@ H5Fclear_elink_file_cache(hid_t file_id)
 done:
     FUNC_LEAVE_API(ret_value)
 } /* end H5Fclear_elink_file_cache() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5F_set_grp_btree_shared
- *
- * Purpose:     Set the grp_btree_shared field with a valid ref-count pointer.
- *
- * Return:      Success:        SUCCEED
- *              Failure:        FAIL
- *
- * Programmer:  Quincey Koziol
- *              7/19/11
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_set_grp_btree_shared(H5F_t *f, H5RC_t *rc)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-    HDassert(rc);
-
-    f->shared->grp_btree_shared = rc;
-
-    FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5F_set_grp_btree_shared() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5F_set_sohm_addr
- *
- * Purpose:     Set the sohm_addr field with a new value.
- *
- * Return:      Success:        SUCCEED
- *              Failure:        FAIL
- *
- * Programmer:  Quincey Koziol
- *              7/20/11
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_set_sohm_addr(H5F_t *f, haddr_t addr)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    f->shared->sohm_addr = addr;
-
-    FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5F_set_sohm_addr() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5F_set_sohm_vers
- *
- * Purpose:     Set the sohm_vers field with a new value.
- *
- * Return:      Success:        SUCCEED
- *              Failure:        FAIL
- *
- * Programmer:  Quincey Koziol
- *              7/20/11
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_set_sohm_vers(H5F_t *f, unsigned vers)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    f->shared->sohm_vers = vers;
-
-    FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5F_set_sohm_vers() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5F_set_sohm_nindexes
- *
- * Purpose:     Set the sohm_nindexes field with a new value.
- *
- * Return:      Success:        SUCCEED
- *              Failure:        FAIL
- *
- * Programmer:  Quincey Koziol
- *              7/20/11
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_set_sohm_nindexes(H5F_t *f, unsigned nindexes)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    f->shared->sohm_nindexes = nindexes;
-
-    FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5F_set_sohm_nindexes() */
-
-
-/*-------------------------------------------------------------------------
- * Function:    H5F_set_store_msg_crt_idx
- *
- * Purpose:     Set the store_msg_crt_idx field with a new value.
- *
- * Return:      Success:        SUCCEED
- *              Failure:        FAIL
- *
- * Programmer:  Quincey Koziol
- *              7/20/11
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5F_set_store_msg_crt_idx(H5F_t *f, hbool_t flag)
-{
-    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
-
-    /* Sanity check */
-    HDassert(f);
-    HDassert(f->shared);
-
-    f->shared->store_msg_crt_idx = flag;
-
-    FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5F_set_store_msg_crt_idx() */
-
diff --git a/src/H5Fint.c b/src/H5Fint.c
new file mode 100644
index 0000000..4e8fe65
--- /dev/null
+++ b/src/H5Fint.c
@@ -0,0 +1,2047 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/****************/
+/* Module Setup */
+/****************/
+
+#define H5F_PACKAGE		/*suppress error about including H5Fpkg	  */
+
+/* Interface initialization */
+#define H5_INTERFACE_INIT_FUNC	H5F_init_interface
+
+
+/***********/
+/* Headers */
+/***********/
+#include "H5private.h"		/* Generic Functions			*/
+#include "H5Aprivate.h"		/* Attributes				*/
+#include "H5ACprivate.h"        /* Metadata cache                       */
+#include "H5Dprivate.h"		/* Datasets				*/
+#include "H5Eprivate.h"		/* Error handling		  	*/
+#include "H5Fpkg.h"             /* File access				*/
+#include "H5FDprivate.h"	/* File drivers				*/
+#include "H5Gprivate.h"		/* Groups				*/
+#include "H5Iprivate.h"		/* IDs			  		*/
+#include "H5MFprivate.h"	/* File memory management		*/
+#include "H5MMprivate.h"	/* Memory management			*/
+#include "H5Pprivate.h"		/* Property lists			*/
+#include "H5SMprivate.h"	/* Shared Object Header Messages	*/
+#include "H5Tprivate.h"		/* Datatypes				*/
+
+/* Predefined file drivers */
+#include "H5FDcore.h"		/*temporary in-memory files		*/
+#include "H5FDfamily.h"		/*family of files			*/
+#include "H5FDlog.h"            /* sec2 driver with logging, for debugging */
+#include "H5FDmpi.h"            /* MPI-based file drivers		*/
+#include "H5FDmulti.h"		/*multiple files partitioned by mem usage */
+#include "H5FDsec2.h"		/*Posix unbuffered I/O			*/
+#include "H5FDstdio.h"		/* Standard C buffered I/O		*/
+#ifdef H5_HAVE_WINDOWS
+#include "H5FDwindows.h"        /* Windows buffered I/O     */
+#endif
+#include "H5FDdirect.h"         /*Linux direct I/O			*/
+
+/****************/
+/* Local Macros */
+/****************/
+
+/******************/
+/* Local Typedefs */
+/******************/
+
+/* Struct only used by functions H5F_get_objects and H5F_get_objects_cb */
+typedef struct H5F_olist_t {
+    H5I_type_t obj_type;        /* Type of object to look for */
+    hid_t      *obj_id_list;    /* Pointer to the list of open IDs to return */
+    size_t     *obj_id_count;   /* Number of open IDs */
+    struct {
+        hbool_t local;          /* Set flag for "local" file searches */
+        union {
+            H5F_file_t *shared; /* Pointer to shared file to look inside */
+            const H5F_t *file;  /* Pointer to file to look inside */
+        } ptr;
+    } file_info;
+    size_t     list_index;      /* Current index in open ID array */
+    size_t     max_nobjs;       /* Maximum # of IDs to put into array */
+} H5F_olist_t;
+
+
+/********************/
+/* Package Typedefs */
+/********************/
+
+
+/********************/
+/* Local Prototypes */
+/********************/
+
+static int H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key);
+static herr_t H5F_build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl,
+    const char *name, char ** /*out*/ actual_name);/* Declare a free list to manage the H5F_t struct */
+
+
+/*********************/
+/* Package Variables */
+/*********************/
+
+
+/*****************************/
+/* Library Private Variables */
+/*****************************/
+
+
+/*******************/
+/* Local Variables */
+/*******************/
+
+/* Declare a free list to manage the H5F_t struct */
+H5FL_DEFINE(H5F_t);
+
+/* Declare a free list to manage the H5F_file_t struct */
+H5FL_DEFINE(H5F_file_t);
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_init_interface
+ *
+ * Purpose:	Initialize interface-specific information.
+ *
+ * Return:	Success:	non-negative
+ *		Failure:	negative
+ *
+ * Programmer:	Robb Matzke
+ *              Friday, November 20, 1998
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5F_init_interface(void)
+{
+    herr_t ret_value = SUCCEED;                 /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_init_interface() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_get_access_plist
+ *
+ * Purpose:	Returns a copy of the file access property list of the
+ *		specified file.
+ *
+ *              NOTE: Make sure that, if you are going to overwrite
+ *              information in the copied property list that was
+ *              previously opened and assigned to the property list, then
+ *              you must close it before overwriting the values.
+ *
+ * Return:	Success:	Object ID for a copy of the file access
+ *				property list.
+ *
+ *		Failure:	FAIL
+ *
+ * Programmer:	Quincey Koziol
+ *              Wednesday, May 25, 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5F_get_access_plist(H5F_t *f, hbool_t app_ref)
+{
+    H5P_genplist_t *new_plist;              /* New property list */
+    H5P_genplist_t *old_plist;              /* Old property list */
+    void		*driver_info=NULL;
+    unsigned            efc_size = 0;
+    hid_t		ret_value = SUCCEED;
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Check args */
+    HDassert(f);
+
+    /* Make a copy of the default file access property list */
+    if(NULL == (old_plist = (H5P_genplist_t *)H5I_object(H5P_LST_FILE_ACCESS_ID_g)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
+    if((ret_value = H5P_copy_plist(old_plist, app_ref)) < 0)
+	HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "can't copy file access property list")
+    if(NULL == (new_plist = (H5P_genplist_t *)H5I_object(ret_value)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
+
+    /* Copy properties of the file access property list */
+    if(H5P_set(new_plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set initial metadata cache resize config.")
+    if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache number of slots")
+    if(H5P_set(new_plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data cache byte size")
+    if(H5P_set(new_plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set preempt read chunks")
+    if(H5P_set(new_plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set alignment threshold")
+    if(H5P_set(new_plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set alignment")
+    if(H5P_set(new_plist, H5F_ACS_GARBG_COLCT_REF_NAME, &(f->shared->gc_ref)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set garbage collect reference")
+    if(H5P_set(new_plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set metadata cache size")
+    if(H5P_set(new_plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't sieve buffer size")
+    if(H5P_set(new_plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set 'small data' cache size")
+    if(H5P_set(new_plist, H5F_ACS_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set 'latest format' flag")
+    if(f->shared->efc)
+        efc_size = H5F_efc_max_nfiles(f->shared->efc);
+    if(H5P_set(new_plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't set elink file cache size")
+
+    /*
+     * Since we're resetting the driver ID and info, close them if they
+     * exist in this new property list.
+     */
+    if(H5P_facc_close(ret_value, NULL) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTFREE, FAIL, "can't free the old driver information")
+
+    /* Increment the reference count on the driver ID and insert it into the property list */
+    if(H5I_inc_ref(f->shared->lf->driver_id, FALSE) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTINC, FAIL, "unable to increment ref count on VFL driver")
+    if(H5P_set(new_plist, H5F_ACS_FILE_DRV_ID_NAME, &(f->shared->lf->driver_id)) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file driver ID")
+
+    /* Set the driver "info" in the property list */
+    driver_info = H5FD_fapl_get(f->shared->lf);
+    if(driver_info != NULL && H5P_set(new_plist, H5F_ACS_FILE_DRV_INFO_NAME, &driver_info) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file driver info")
+
+    /* Set the file close degree appropriately */
+    if(f->shared->fc_degree == H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->lf->cls->fc_degree)) < 0) {
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file close degree")
+    } else if(f->shared->fc_degree != H5F_CLOSE_DEFAULT && H5P_set(new_plist, H5F_ACS_CLOSE_DEGREE_NAME, &(f->shared->fc_degree)) < 0) {
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set file close degree")
+    }
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_access_plist() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_get_obj_count
+ *
+ * Purpose:	Private function return the number of opened object IDs
+ *		(files, datasets, groups, datatypes) in the same file.
+ *
+ * Return:      SUCCEED on success, FAIL on failure.
+ *
+ * Programmer:  Raymond Lu
+ *              Wednesday, Dec 5, 2001
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref, size_t *obj_id_count_ptr)
+{
+    herr_t   ret_value = SUCCEED;
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check */
+    HDassert(obj_id_count_ptr);
+
+    /* Perform the query */
+    if((ret_value = H5F_get_objects(f, types, 0, NULL, app_ref, obj_id_count_ptr)) < 0)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_objects failed")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_obj_count() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_get_obj_ids
+ *
+ * Purpose:     Private function to return a list of opened object IDs.
+ *
+ * Return:      Non-negative on success; can't fail.
+ *
+ * Programmer:  Raymond Lu
+ *              Wednesday, Dec 5, 2001
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *oid_list, hbool_t app_ref, size_t *obj_id_count_ptr)
+{
+    herr_t ret_value = SUCCEED;              /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check */
+    HDassert(obj_id_count_ptr);
+
+    /* Perform the query */
+    if((ret_value = H5F_get_objects(f, types, max_objs, oid_list, app_ref, obj_id_count_ptr)) < 0)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_objects failed")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_obj_ids() */
+
+
+/*---------------------------------------------------------------------------
+ * Function:	H5F_get_objects
+ *
+ * Purpose:	This function is called by H5F_get_obj_count or
+ *		H5F_get_obj_ids to get number of object IDs and/or a
+ *		list of opened object IDs (in return value).
+ * Return:	Non-negative on success; Can't fail.
+ *
+ * Programmer:  Raymond Lu
+ *              Wednesday, Dec 5, 2001
+ *
+ *---------------------------------------------------------------------------
+ */
+herr_t
+H5F_get_objects(const H5F_t *f, unsigned types, size_t max_nobjs, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr)
+{
+    size_t obj_id_count=0;      /* Number of open IDs */
+    H5F_olist_t olist;          /* Structure to hold search results */
+    herr_t ret_value = SUCCEED; /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Sanity check */
+    HDassert(obj_id_count_ptr);
+
+    /* Set up search information */
+    olist.obj_id_list  = (max_nobjs==0 ? NULL : obj_id_list);
+    olist.obj_id_count = &obj_id_count;
+    olist.list_index   = 0;
+    olist.max_nobjs   = max_nobjs;
+
+    /* Determine if we are searching for local or global objects */
+    if(types & H5F_OBJ_LOCAL) {
+        olist.file_info.local = TRUE;
+        olist.file_info.ptr.file = f;
+    } /* end if */
+    else {
+        olist.file_info.local = FALSE;
+        olist.file_info.ptr.shared = f ? f->shared : NULL;
+    } /* end else */
+
+    /* Iterate through file IDs to count the number, and put their
+     * IDs on the object list.  */
+    if(types & H5F_OBJ_FILE) {
+        olist.obj_type = H5I_FILE;
+        if(H5I_iterate(H5I_FILE, H5F_get_objects_cb, &olist, app_ref) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(1)")
+    } /* end if */
+
+    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
+     * or the caller wants to get the list of IDs and the list isn't full,
+     * search through dataset IDs to count number of datasets, and put their
+     * IDs on the object list */
+    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
+        if (types & H5F_OBJ_DATASET) {
+            olist.obj_type = H5I_DATASET;
+            if(H5I_iterate(H5I_DATASET, H5F_get_objects_cb, &olist, app_ref) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(2)")
+        } /* end if */
+    } 
+
+    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
+     * or the caller wants to get the list of IDs and the list isn't full,
+     * search through group IDs to count number of groups, and put their
+     * IDs on the object list */
+    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
+        if(types & H5F_OBJ_GROUP) {
+            olist.obj_type = H5I_GROUP;
+            if(H5I_iterate(H5I_GROUP, H5F_get_objects_cb, &olist, app_ref) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(3)")
+        } /* end if */
+    } 
+
+    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
+     * or the caller wants to get the list of IDs and the list isn't full,
+     * search through datatype IDs to count number of named datatypes, and put their
+     * IDs on the object list */
+    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) { 
+        if(types & H5F_OBJ_DATATYPE) {
+            olist.obj_type = H5I_DATATYPE;
+            if(H5I_iterate(H5I_DATATYPE, H5F_get_objects_cb, &olist, app_ref) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(4)")
+        } /* end if */
+    } 
+
+    /* If the caller just wants to count the number of objects (OLIST.MAX_NOBJS is zero),
+     * or the caller wants to get the list of IDs and the list isn't full,
+     * search through attribute IDs to count number of attributes, and put their
+     * IDs on the object list */
+    if(!olist.max_nobjs || (olist.max_nobjs && olist.list_index<olist.max_nobjs)) {
+        if(types & H5F_OBJ_ATTR) {
+            olist.obj_type = H5I_ATTR;
+            if(H5I_iterate(H5I_ATTR, H5F_get_objects_cb, &olist, app_ref) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_BADITER, FAIL, "iteration failed(5)")
+        } /* end if */
+    }
+ 
+    /* Set the number of objects currently open */
+    *obj_id_count_ptr = obj_id_count;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_objects() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_get_objects_cb
+ *
+ * Purpose:	H5F_get_objects' callback function.  It verifies if an
+ * 		object is in the file, and either count it or put its ID
+ *		on the list.
+ *
+ * Return:      H5_ITER_STOP if the array of object IDs is filled up.
+ *              H5_ITER_CONT otherwise.
+ *
+ * Programmer:  Raymond Lu
+ *              Wednesday, Dec 5, 2001
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+H5F_get_objects_cb(void *obj_ptr, hid_t obj_id, void *key)
+{
+    H5F_olist_t *olist = (H5F_olist_t *)key;    /* Alias for search info */
+    int         ret_value = H5_ITER_CONT;    /* Return value */
+    hbool_t     add_obj = FALSE;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    HDassert(obj_ptr);
+    HDassert(olist);
+
+    /* Count file IDs */
+    if(olist->obj_type == H5I_FILE) {
+        if((olist->file_info.local &&
+                        (!olist->file_info.ptr.file || (olist->file_info.ptr.file && (H5F_t*)obj_ptr == olist->file_info.ptr.file) ))
+                ||  (!olist->file_info.local &&
+                        ( !olist->file_info.ptr.shared || (olist->file_info.ptr.shared && ((H5F_t*)obj_ptr)->shared == olist->file_info.ptr.shared) ))) {
+            add_obj = TRUE;
+	}
+    } /* end if */
+    else { /* either count opened object IDs or put the IDs on the list */
+        H5O_loc_t *oloc;        /* Group entry info for object */
+
+    	switch(olist->obj_type) {
+	    case H5I_ATTR:
+	        oloc = H5A_oloc((H5A_t *)obj_ptr);
+                break;
+
+	    case H5I_GROUP:
+	        oloc = H5G_oloc((H5G_t *)obj_ptr);
+                break;
+
+	    case H5I_DATASET:
+	        oloc = H5D_oloc((H5D_t *)obj_ptr);
+		break;
+
+	    case H5I_DATATYPE:
+                if(H5T_is_named((H5T_t*)obj_ptr)==TRUE)
+                    oloc = H5T_oloc((H5T_t*)obj_ptr);
+                else
+                    oloc = NULL;
+		break;
+
+	    case H5I_UNINIT:
+	    case H5I_BADID:
+	    case H5I_FILE:
+	    case H5I_DATASPACE:
+	    case H5I_REFERENCE:
+	    case H5I_VFL:
+	    case H5I_GENPROP_CLS:
+	    case H5I_GENPROP_LST:
+	    case H5I_ERROR_CLASS:
+	    case H5I_ERROR_MSG:
+	    case H5I_ERROR_STACK:
+	    case H5I_NTYPES:
+            default:
+                HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5_ITER_ERROR, "unknown data object")
+	} /* end switch */
+
+        if((olist->file_info.local &&
+                    ( (!olist->file_info.ptr.file && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE)
+                            || (!olist->file_info.ptr.file && olist->obj_type != H5I_DATATYPE)
+                            || (oloc && oloc->file == olist->file_info.ptr.file)))
+                || (!olist->file_info.local &&
+                    ((!olist->file_info.ptr.shared && olist->obj_type == H5I_DATATYPE && H5T_is_immutable((H5T_t *)obj_ptr) == FALSE)
+                            || (!olist->file_info.ptr.shared && olist->obj_type != H5I_DATATYPE)
+                            || (oloc && oloc->file && oloc->file->shared == olist->file_info.ptr.shared)))) {
+            add_obj = TRUE;
+    	} /* end if */
+    } /* end else */
+
+    if(TRUE==add_obj) {
+        /* Add the object's ID to the ID list, if appropriate */
+        if(olist->obj_id_list) {
+            olist->obj_id_list[olist->list_index] = obj_id;
+	    olist->list_index++;
+	} /* end if */
+
+        /* Increment the number of open objects */
+	if(olist->obj_id_count)
+            (*olist->obj_id_count)++;
+
+        /* Check if we've filled up the array.  Return H5_ITER_STOP only if
+         * we have filled up the array. Otherwise return H5_ITER_CONT(RET_VALUE is
+         * preset to H5_ITER_CONT) because H5I_iterate needs the return value of 
+         * H5_ITER_CONT to continue the iteration. */
+        if(olist->max_nobjs>0 && olist->list_index>=olist->max_nobjs)
+            HGOTO_DONE(H5_ITER_STOP)  /* Indicate that the iterator should stop */
+    }
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_objects_cb() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_is_hdf5
+ *
+ * Purpose:	Check the file signature to detect an HDF5 file.
+ *
+ * Bugs:	This function is not robust: it only uses the default file
+ *		driver when attempting to open the file when in fact it
+ *		should use all known file drivers.
+ *
+ * Return:	Success:	TRUE/FALSE
+ *
+ *		Failure:	Negative
+ *
+ * Programmer:	Unknown
+ *
+ * Modifications:
+ *		Robb Matzke, 1999-08-02
+ *		Rewritten to use the virtual file layer.
+ *-------------------------------------------------------------------------
+ */
+htri_t
+H5F_is_hdf5(const char *name)
+{
+    H5FD_t	*file = NULL;           /* Low-level file struct */
+    haddr_t     sig_addr;               /* Addess of hdf5 file signature */
+    htri_t	ret_value;              /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Open the file at the virtual file layer */
+    if(NULL == (file = H5FD_open(name, H5F_ACC_RDONLY, H5P_FILE_ACCESS_DEFAULT, HADDR_UNDEF)))
+	HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "unable to open file")
+
+    /* The file is an hdf5 file if the hdf5 file signature can be found */
+    if(H5FD_locate_signature(file, H5AC_ind_dxpl_g, &sig_addr) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL, "unable to locate file signature")
+    ret_value = (HADDR_UNDEF != sig_addr);
+
+done:
+    /* Close the file */
+    if(file)
+        if(H5FD_close(file) < 0 && ret_value >= 0)
+            HDONE_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_is_hdf5() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_new
+ *
+ * Purpose:	Creates a new file object and initializes it.  The
+ *		H5Fopen and H5Fcreate functions then fill in various
+ *		fields.	 If SHARED is a non-null pointer then the shared info
+ *		to which it points has the reference count incremented.
+ *		Otherwise a new, empty shared info struct is created and
+ *		initialized with the specified file access property list.
+ *
+ * Errors:
+ *
+ * Return:	Success:	Ptr to a new file struct.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		matzke@llnl.gov
+ *		Jul 18 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+H5F_t *
+H5F_new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id, hid_t fapl_id, H5FD_t *lf)
+{
+    H5F_t	*f = NULL, *ret_value;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    if(NULL == (f = H5FL_CALLOC(H5F_t)))
+	HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate top file structure")
+    f->file_id = -1;
+
+    if(shared) {
+        HDassert(lf == NULL);
+	f->shared = shared;
+    } /* end if */
+    else {
+        H5P_genplist_t *plist;          /* Property list */
+        unsigned        efc_size;       /* External file cache size */
+        size_t u;                       /* Local index variable */
+
+        HDassert(lf != NULL);
+        if(NULL == (f->shared = H5FL_CALLOC(H5F_file_t)))
+            HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, NULL, "can't allocate shared file structure")
+
+        f->shared->flags = flags;
+	f->shared->sohm_addr = HADDR_UNDEF;
+	f->shared->sohm_vers = HDF5_SHAREDHEADER_VERSION;
+        for(u = 0; u < NELMTS(f->shared->fs_addr); u++)
+            f->shared->fs_addr[u] = HADDR_UNDEF;
+	f->shared->accum.loc = HADDR_UNDEF;
+        f->shared->lf = lf;
+
+	/*
+	 * Copy the file creation and file access property lists into the
+	 * new file handle.  We do this early because some values might need
+	 * to change as the file is being opened.
+	 */
+        if(NULL == (plist = (H5P_genplist_t *)H5I_object(fcpl_id)))
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not property list")
+        f->shared->fcpl_id = H5P_copy_plist(plist, FALSE);
+
+        /* Get the FCPL values to cache */
+        if(H5P_get(plist, H5F_CRT_ADDR_BYTE_NUM_NAME, &f->shared->sizeof_addr) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for address")
+        if(H5P_get(plist, H5F_CRT_OBJ_BYTE_NUM_NAME, &f->shared->sizeof_size) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get byte number for object size")
+        if(H5P_get(plist, H5F_CRT_SHMSG_NINDEXES_NAME, &f->shared->sohm_nindexes) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get number of SOHM indexes")
+        HDassert(f->shared->sohm_nindexes < 255);
+
+        /* Get the FAPL values to cache */
+        if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id)))
+            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list")
+        if(H5P_get(plist, H5F_ACS_META_CACHE_INIT_CONFIG_NAME, &(f->shared->mdc_initCacheCfg)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get initial metadata cache resize config")
+        if(H5P_get(plist, H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME, &(f->shared->rdcc_nslots)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache number of slots")
+        if(H5P_get(plist, H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME, &(f->shared->rdcc_nbytes)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get data cache byte size")
+        if(H5P_get(plist, H5F_ACS_PREEMPT_READ_CHUNKS_NAME, &(f->shared->rdcc_w0)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get preempt read chunk")
+        if(H5P_get(plist, H5F_ACS_ALIGN_THRHD_NAME, &(f->shared->threshold)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment threshold")
+        if(H5P_get(plist, H5F_ACS_ALIGN_NAME, &(f->shared->alignment)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get alignment")
+        if(H5P_get(plist, H5F_ACS_GARBG_COLCT_REF_NAME,&(f->shared->gc_ref)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get garbage collect reference")
+        if(H5P_get(plist, H5F_ACS_SIEVE_BUF_SIZE_NAME, &(f->shared->sieve_buf_size)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get sieve buffer size")
+        if(H5P_get(plist, H5F_ACS_LATEST_FORMAT_NAME, &(f->shared->latest_format)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'latest format' flag")
+        if(H5P_get(plist, H5F_ACS_META_BLOCK_SIZE_NAME, &(f->shared->meta_aggr.alloc_size)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get metadata cache size")
+        f->shared->meta_aggr.feature_flag = H5FD_FEAT_AGGREGATE_METADATA;
+        if(H5P_get(plist, H5F_ACS_SDATA_BLOCK_SIZE_NAME, &(f->shared->sdata_aggr.alloc_size)) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get 'small data' cache size")
+        f->shared->sdata_aggr.feature_flag = H5FD_FEAT_AGGREGATE_SMALLDATA;
+        if(H5P_get(plist, H5F_ACS_EFC_SIZE_NAME, &efc_size) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get elink file cache size")
+        if(efc_size > 0)
+            if(NULL == (f->shared->efc = H5F_efc_create(efc_size)))
+                HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "can't create external file cache")
+
+        /* Get the VFD values to cache */
+        f->shared->maxaddr = H5FD_get_maxaddr(lf);
+        if(!H5F_addr_defined(f->shared->maxaddr))
+            HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad maximum address from VFD")
+        if(H5FD_get_feature_flags(lf, &f->shared->feature_flags) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get feature flags from VFD")
+        if(H5FD_get_fs_type_map(lf, f->shared->fs_type_map) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "can't get free space type mapping from VFD")
+        if(H5MF_init_merge_flags(f) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "problem initializing free space merge flags")
+        f->shared->tmp_addr = f->shared->maxaddr;
+        /* Disable temp. space allocation for parallel I/O (for now) */
+        /* (When we've arranged to have the relocated metadata addresses (and
+         *      sizes) broadcast during the "end of epoch" metadata operations,
+         *      this can be enabled - QAK)
+         */
+        /* (This should be disabled when the metadata journaling branch is
+         *      merged into the trunk and journaling is enabled, at least until
+         *      we make it work. - QAK)
+         */
+        f->shared->use_tmp_space = !(IS_H5FD_MPI(f));
+
+	/*
+	 * Create a metadata cache with the specified number of elements.
+	 * The cache might be created with a different number of elements and
+	 * the access property list should be updated to reflect that.
+	 */
+	if(H5AC_create(f, &(f->shared->mdc_initCacheCfg)) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create metadata cache")
+
+        /* Create the file's "open object" information */
+        if(H5FO_create(f) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure")
+
+        /* Add new "shared" struct to list of open files */
+        if(H5F_sfile_add(f->shared) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to append to list of open files")
+    } /* end else */
+
+    f->shared->nrefs++;
+
+    /* Create the file's "top open object" information */
+    if(H5FO_top_create(f) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create open object data structure")
+
+    /* Set return value */
+    ret_value = f;
+
+done:
+    if(!ret_value && f) {
+	if(!shared) {
+            /* Attempt to clean up some of the shared file structures */
+            if(f->shared->efc)
+                if(H5F_efc_destroy(f->shared->efc) < 0)
+                    HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, NULL, "can't destroy external file cache")
+            if(f->shared->fcpl_id > 0)
+                if(H5I_dec_ref(f->shared->fcpl_id) < 0)
+                    HDONE_ERROR(H5E_FILE, H5E_CANTDEC, NULL, "can't close property list")
+
+            f->shared = H5FL_FREE(H5F_file_t, f->shared);
+        } /* end if */
+	f = H5FL_FREE(H5F_t, f);
+    } /* end if */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_new() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_dest
+ *
+ * Purpose:	Destroys a file structure.  This function flushes the cache
+ *		but doesn't do any other cleanup other than freeing memory
+ *		for the file struct.  The shared info for the file is freed
+ *		only when its reference count reaches zero.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Robb Matzke
+ *		matzke@llnl.gov
+ *		Jul 18 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_dest(H5F_t *f, hid_t dxpl_id, hbool_t flush)
+{
+    herr_t	   ret_value = SUCCEED;         /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    if(1 == f->shared->nrefs) {
+        H5F_io_info_t fio_info;             /* I/O info for operation */
+
+        /* Flush at this point since the file will be closed.
+         * Only try to flush the file if it was opened with write access, and if
+         * the caller requested a flush.
+         */
+        if((f->shared->flags & H5F_ACC_RDWR) && flush)
+            if(H5F_flush(f, dxpl_id, TRUE) < 0)
+                HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush cache")
+
+        /* Release the external file cache */
+        if(f->shared->efc) {
+            if(H5F_efc_destroy(f->shared->efc) < 0)
+                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't destroy external file cache")
+            f->shared->efc = NULL;
+        } /* end if */
+
+        /* Release objects that depend on the superblock being initialized */
+        if(f->shared->sblock) {
+            /* Shutdown file free space manager(s) */
+            /* (We should release the free space information now (before truncating
+             *      the file and before the metadata cache is shut down) since the
+             *      free space manager is holding some data structures in memory
+             *      and also because releasing free space can shrink the file's
+             *      'eoa' value)
+             */
+            if(H5MF_close(f, dxpl_id) < 0)
+                /* Push error, but keep going*/
+                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file free space info")
+
+            /* Unpin the superblock, since we're about to destroy the cache */
+            if(H5AC_unpin_entry(f->shared->sblock) < 0)
+                /* Push error, but keep going*/
+                HDONE_ERROR(H5E_FSPACE, H5E_CANTUNPIN, FAIL, "unable to unpin superblock")
+            f->shared->sblock = NULL;
+        } /* end if */
+ 
+        /* Remove shared file struct from list of open files */
+        if(H5F_sfile_remove(f->shared) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+
+        /* Shutdown the metadata cache */
+        if(H5AC_dest(f, dxpl_id))
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+
+        /*
+         * Do not close the root group since we didn't count it, but free
+         * the memory associated with it.
+         */
+        if(f->shared->root_grp) {
+            /* Free the root group */
+            if(H5G_root_free(f->shared->root_grp) < 0)
+                /* Push error, but keep going*/
+                HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+            f->shared->root_grp = NULL;
+        } /* end if */
+
+        /* Set up I/O info for operation */
+        fio_info.f = f;
+        if(NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id)))
+            HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
+
+        /* Destroy other components of the file */
+        if(H5F__accum_reset(&fio_info, TRUE) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+        if(H5FO_dest(f) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+        f->shared->cwfs = (struct H5HG_heap_t **)H5MM_xfree(f->shared->cwfs);
+        if(H5G_node_close(f) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "problems closing file")
+
+        /* Destroy file creation properties */
+        if(H5I_GENPROP_LST != H5I_get_type(f->shared->fcpl_id))
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_BADTYPE, FAIL, "not a property list")
+        if(H5I_dec_ref(f->shared->fcpl_id) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTDEC, FAIL, "can't close property list")
+
+        /* Only truncate the file on an orderly close, with write-access */
+        if(f->closing && (H5F_ACC_RDWR & H5F_INTENT(f))) {
+            /* Truncate the file to the current allocated size */
+            if(H5FD_truncate(f->shared->lf, dxpl_id, (unsigned)TRUE) < 0)
+                /* Push error, but keep going*/
+                HDONE_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "low level truncate failed")
+        } /* end if */
+
+        /* Close the file */
+        if(H5FD_close(f->shared->lf) < 0)
+            /* Push error, but keep going*/
+            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
+
+        /* Free mount table */
+        f->shared->mtab.child = (H5F_mount_t *)H5MM_xfree(f->shared->mtab.child);
+        f->shared->mtab.nalloc = 0;
+
+        /* Destroy shared file struct */
+        f->shared = (H5F_file_t *)H5FL_FREE(H5F_file_t, f->shared);
+
+    } else if(f->shared->nrefs > 0) {
+        /*
+         * There are other references to the shared part of the file.
+         * Only decrement the reference count.
+         */
+        --f->shared->nrefs;
+    }
+
+    /* Free the non-shared part of the file */
+    f->open_name = (char *)H5MM_xfree(f->open_name);
+    f->actual_name = (char *)H5MM_xfree(f->actual_name);
+    f->extpath = (char *)H5MM_xfree(f->extpath);
+    if(H5FO_top_dest(f) < 0)
+        HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "problems closing file")
+    f->shared = NULL;
+    f = H5FL_FREE(H5F_t, f);
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_dest() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_open
+ *
+ * Purpose:	Opens (or creates) a file.  This function understands the
+ *		following flags which are similar in nature to the Posix
+ *		open(2) flags.
+ *
+ *		H5F_ACC_RDWR:	Open with read/write access. If the file is
+ *				currently open for read-only access then it
+ *				will be reopened. Absence of this flag
+ *				implies read-only access.
+ *
+ *		H5F_ACC_CREAT:	Create a new file if it doesn't exist yet.
+ *				The permissions are 0666 bit-wise AND with
+ *				the current umask.  H5F_ACC_WRITE must also
+ *				be specified.
+ *
+ *		H5F_ACC_EXCL:	This flag causes H5F_open() to fail if the
+ *				file already exists.
+ *
+ *		H5F_ACC_TRUNC:	The file is truncated and a new HDF5 superblock
+ *				is written.  This operation will fail if the
+ *				file is already open.
+ *
+ *		Unlinking the file name from the group directed graph while
+ *		the file is opened causes the file to continue to exist but
+ *		one will not be able to upgrade the file from read-only
+ *		access to read-write access by reopening it. Disk resources
+ *		for the file are released when all handles to the file are
+ *		closed. NOTE: This paragraph probably only applies to Unix;
+ *		deleting the file name in other OS's has undefined results.
+ *
+ *		The CREATE_PARMS argument is optional.	A null pointer will
+ *		cause the default file creation parameters to be used.
+ *
+ *		The ACCESS_PARMS argument is optional.  A null pointer will
+ *		cause the default file access parameters to be used.
+ *
+ * Return:	Success:	A new file pointer.
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		Tuesday, September 23, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+H5F_t *
+H5F_open(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id,
+    hid_t dxpl_id)
+{
+    H5F_t              *file = NULL;        /*the success return value      */
+    H5F_file_t         *shared = NULL;      /*shared part of `file'         */
+    H5FD_t             *lf = NULL;          /*file driver part of `shared'  */
+    unsigned            tent_flags;         /*tentative flags               */
+    H5FD_class_t       *drvr;               /*file driver class info        */
+    H5P_genplist_t     *a_plist;            /*file access property list     */
+    H5F_close_degree_t  fc_degree;          /*file close degree             */
+    H5F_t              *ret_value;          /*actual return value           */
+
+    FUNC_ENTER_NOAPI(NULL)
+
+    /*
+     * If the driver has a `cmp' method then the driver is capable of
+     * determining when two file handles refer to the same file and the
+     * library can insure that when the application opens a file twice
+     * that the two handles coordinate their operations appropriately.
+     * Otherwise it is the application's responsibility to never open the
+     * same file more than once at a time.
+     */
+    if(NULL == (drvr = H5FD_get_class(fapl_id)))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, NULL, "unable to retrieve VFL class")
+
+    /*
+     * Opening a file is a two step process. First we try to open the
+     * file in a way which doesn't affect its state (like not truncating
+     * or creating it) so we can compare it with files that are already
+     * open. If that fails then we try again with the full set of flags
+     * (only if they're different than the original failed attempt).
+     * However, if the file driver can't distinquish between files then
+     * there's no reason to open the file tentatively because it's the
+     * application's responsibility to prevent this situation (there's no
+     * way for us to detect it here anyway).
+     */
+    if(drvr->cmp)
+	tent_flags = flags & ~(H5F_ACC_CREAT|H5F_ACC_TRUNC|H5F_ACC_EXCL);
+    else
+	tent_flags = flags;
+
+    if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) {
+	if(tent_flags == flags) {
+#ifndef H5_USING_MEMCHECKER
+            time_t mytime = HDtime(NULL);
+
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags)
+#else /* H5_USING_MEMCHECKER */
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags)
+#endif /* H5_USING_MEMCHECKER */
+        } /* end if */
+        H5E_clear_stack(NULL);
+	tent_flags = flags;
+	if(NULL == (lf = H5FD_open(name, tent_flags, fapl_id, HADDR_UNDEF))) {
+#ifndef H5_USING_MEMCHECKER
+            time_t mytime = HDtime(NULL);
+
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: time = %s, name = '%s', tent_flags = %x", HDctime(&mytime), name, tent_flags)
+#else /* H5_USING_MEMCHECKER */
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file: name = '%s', tent_flags = %x", name, tent_flags)
+#endif /* H5_USING_MEMCHECKER */
+        } /* end if */
+    } /* end if */
+
+    /* Is the file already open? */
+    if((shared = H5F_sfile_search(lf)) != NULL) {
+	/*
+	 * The file is already open, so use that one instead of the one we
+	 * just opened. We only one one H5FD_t* per file so one doesn't
+	 * confuse the other.  But fail if this request was to truncate the
+	 * file (since we can't do that while the file is open), or if the
+	 * request was to create a non-existent file (since the file already
+	 * exists), or if the new request adds write access (since the
+	 * readers don't expect the file to change under them).
+	 */
+	if(H5FD_close(lf) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info")
+	if(flags & H5F_ACC_TRUNC)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to truncate a file which is already open")
+	if(flags & H5F_ACC_EXCL)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file exists")
+	if((flags & H5F_ACC_RDWR) && 0 == (shared->flags & H5F_ACC_RDWR))
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file is already open for read-only")
+
+        /* Allocate new "high-level" file struct */
+        if((file = H5F_new(shared, flags, fcpl_id, fapl_id, NULL)) == NULL)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object")
+    } /* end if */
+    else {
+        /* Check if tentative open was good enough */
+        if(flags != tent_flags) {
+            /*
+             * This file is not yet open by the library and the flags we used to
+             * open it are different than the desired flags. Close the tentative
+             * file and open it for real.
+             */
+            if(H5FD_close(lf) < 0) {
+                file = NULL; /*to prevent destruction of wrong file*/
+                HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to close low-level file info")
+            } /* end if */
+            if(NULL == (lf = H5FD_open(name, flags, fapl_id, HADDR_UNDEF))) {
+                file = NULL; /*to prevent destruction of wrong file*/
+                HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file")
+            } /* end if */
+        } /* end if */
+
+        if(NULL == (file = H5F_new(NULL, flags, fcpl_id, fapl_id, lf)))
+            HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to create new file object")
+    } /* end else */
+
+    /* Retain the name the file was opened with */
+    file->open_name = H5MM_xstrdup(name);
+
+    /* Short cuts */
+    shared = file->shared;
+    lf = shared->lf;
+
+    /*
+     * Read or write the file superblock, depending on whether the file is
+     * empty or not.
+     */
+    if(0 == H5FD_get_eof(lf) && (flags & H5F_ACC_RDWR)) {
+        /*
+         * We've just opened a fresh new file (or truncated one). We need
+         * to create & write the superblock.
+         */
+
+        /* Initialize information about the superblock and allocate space for it */
+        /* (Writes superblock extension messages, if there are any) */
+        if(H5F_super_init(file, dxpl_id) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to allocate file superblock")
+
+        /* Create and open the root group */
+        /* (This must be after the space for the superblock is allocated in
+         *      the file, since the superblock must be at offset 0)
+         */
+        if(H5G_mkroot(file, dxpl_id, TRUE) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to create/open root group")
+    } else if (1 == shared->nrefs) {
+	/* Read the superblock if it hasn't been read before. */
+        if(H5F_super_read(file, dxpl_id) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_READERROR, NULL, "unable to read superblock")
+
+	/* Open the root group */
+	if(H5G_mkroot(file, dxpl_id, FALSE) < 0)
+	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to read root group")
+    } /* end if */
+
+    /* Get the file access property list, for future queries */
+    if(NULL == (a_plist = (H5P_genplist_t *)H5I_object(fapl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not file access property list")
+
+    /*
+     * Decide the file close degree.  If it's the first time to open the
+     * file, set the degree to access property list value; if it's the
+     * second time or later, verify the access property list value matches
+     * the degree in shared file structure.
+     */
+    if(H5P_get(a_plist, H5F_ACS_CLOSE_DEGREE_NAME, &fc_degree) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get file close degree")
+
+    if(shared->nrefs == 1) {
+        if(fc_degree == H5F_CLOSE_DEFAULT)
+            shared->fc_degree = lf->cls->fc_degree;
+        else
+            shared->fc_degree = fc_degree;
+    } else if(shared->nrefs > 1) {
+        if(fc_degree == H5F_CLOSE_DEFAULT && shared->fc_degree != lf->cls->fc_degree)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match")
+        if(fc_degree != H5F_CLOSE_DEFAULT && fc_degree != shared->fc_degree)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "file close degree doesn't match")
+    } /* end if */
+
+    /* Formulate the absolute path for later search of target file for external links */
+    if(H5_build_extpath(name, &file->extpath) < 0)
+	HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build extpath")
+
+    /* Formulate the actual file name, after following symlinks, etc. */
+    if(H5F_build_actual_name(file, a_plist, name, &file->actual_name) < 0)
+	HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "unable to build actual name")
+
+    /* Success */
+    ret_value = file;
+
+done:
+    if(!ret_value && file)
+        if(H5F_dest(file, dxpl_id, FALSE) < 0)
+            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, NULL, "problems closing file")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_open() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_flush
+ *
+ * Purpose:	Flushes cached data.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Robb Matzke
+ *		matzke@llnl.gov
+ *		Aug 29 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing)
+{
+    H5F_io_info_t fio_info;             /* I/O info for operation */
+    herr_t   ret_value = SUCCEED;       /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
+
+    /* Sanity check arguments */
+    HDassert(f);
+
+    /* Flush any cached dataset storage raw data */
+    if(H5D_flush(f, dxpl_id) < 0)
+        /* Push error, but keep going*/
+        HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush dataset cache")
+
+    /* Release any space allocated to space aggregators, so that the eoa value
+     *  corresponds to the end of the space written to in the file.
+     */
+    /* (needs to happen before cache flush, with superblock write, since the
+     *  'eoa' value is written in superblock -QAK)
+     */
+    if(H5MF_free_aggrs(f, dxpl_id) < 0)
+        /* Push error, but keep going*/
+        HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't release file space")
+
+    /* Flush the entire metadata cache */
+    if(H5AC_flush(f, dxpl_id) < 0)
+        /* Push error, but keep going*/
+        HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush metadata cache")
+
+    /* Set up I/O info for operation */
+    fio_info.f = f;
+    if(NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id)))
+        HDONE_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
+
+    /* Flush out the metadata accumulator */
+    if(H5F__accum_flush(&fio_info) < 0)
+        /* Push error, but keep going*/
+        HDONE_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush metadata accumulator")
+
+    /* Flush file buffers to disk. */
+    if(H5FD_flush(f->shared->lf, dxpl_id, closing) < 0)
+        /* Push error, but keep going*/
+        HDONE_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level flush failed")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_flush() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_close
+ *
+ * Purpose:	Closes a file or causes the close operation to be pended.
+ *		This function is called two ways: from the API it gets called
+ *		by H5Fclose->H5I_dec_ref->H5F_close when H5I_dec_ref()
+ *		decrements the file ID reference count to zero.  The file ID
+ *		is removed from the H5I_FILE group by H5I_dec_ref() just
+ *		before H5F_close() is called. If there are open object
+ *		headers then the close is pended by moving the file to the
+ *		H5I_FILE_CLOSING ID group (the f->closing contains the ID
+ *		assigned to file).
+ *
+ *		This function is also called directly from H5O_close() when
+ *		the last object header is closed for the file and the file
+ *		has a pending close.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Robb Matzke
+ *		Tuesday, September 23, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_close(H5F_t *f)
+{
+    herr_t	        ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->file_id > 0);   /* This routine should only be called when a file ID's ref count drops to zero */
+
+    /* Perform checks for "semi" file close degree here, since closing the
+     * file is not allowed if there are objects still open */
+    if(f->shared->fc_degree == H5F_CLOSE_SEMI) {
+        unsigned nopen_files = 0;       /* Number of open files in file/mount hierarchy */
+        unsigned nopen_objs = 0;        /* Number of open objects in file/mount hierarchy */
+
+        /* Get the number of open objects and open files on this file/mount hierarchy */
+        if(H5F_mount_count_ids(f, &nopen_files, &nopen_objs) < 0)
+            HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy")
+
+        /* If there are no other file IDs open on this file/mount hier., but
+         * there are still open objects, issue an error and bail out now,
+         * without decrementing the file ID's reference count and triggering
+         * a "real" attempt at closing the file */
+        if(nopen_files == 1 && nopen_objs > 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, there are objects still open")
+    } /* end if */
+
+    /* Reset the file ID for this file */
+    f->file_id = -1;
+
+    /* Attempt to close the file/mount hierarchy */
+    if(H5F_try_close(f) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_try_close
+ *
+ * Purpose:	Attempts to close a file due to one of several actions:
+ *                      - The reference count on the file ID dropped to zero
+ *                      - The last open object was closed in the file
+ *                      - The file was unmounted
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *		Tuesday, July 19, 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_try_close(H5F_t *f)
+{
+    unsigned            nopen_files = 0;        /* Number of open files in file/mount hierarchy */
+    unsigned            nopen_objs = 0;         /* Number of open objects in file/mount hierarchy */
+    herr_t	        ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    /* Check if this file is already in the process of closing */
+    if(f->closing)
+        HGOTO_DONE(SUCCEED)
+
+    /* Get the number of open objects and open files on this file/mount hierarchy */
+    if(H5F_mount_count_ids(f, &nopen_files, &nopen_objs) < 0)
+        HGOTO_ERROR(H5E_SYM, H5E_MOUNT, FAIL, "problem checking mount hierarchy")
+
+    /*
+     * Close file according to close degree:
+     *
+     *  H5F_CLOSE_WEAK:	if there are still objects open, wait until
+     *			they are all closed.
+     *  H5F_CLOSE_SEMI:	if there are still objects open, return fail;
+     *			otherwise, close file.
+     *  H5F_CLOSE_STRONG:	if there are still objects open, close them
+     *			first, then close file.
+     */
+    switch(f->shared->fc_degree) {
+        case H5F_CLOSE_WEAK:
+            /*
+             * If file or object IDS are still open then delay deletion of
+             * resources until they have all been closed.  Flush all
+             * caches and update the object header anyway so that failing to
+             * close all objects isn't a major problem.
+             */
+            if((nopen_files + nopen_objs) > 0)
+                HGOTO_DONE(SUCCEED)
+            break;
+
+        case H5F_CLOSE_SEMI:
+            /* Can leave safely if file IDs are still open on this file */
+            if(nopen_files > 0)
+                HGOTO_DONE(SUCCEED)
+
+            /* Sanity check: If close degree if "semi" and we have gotten this
+             * far and there are objects left open, bail out now */
+            HDassert(nopen_files == 0 && nopen_objs == 0);
+
+            /* If we've gotten this far (ie. there are no open objects in the file), fall through to flush & close */
+            break;
+
+        case H5F_CLOSE_STRONG:
+            /* If there are other open files in the hierarchy, we can leave now */
+            if(nopen_files > 0)
+                HGOTO_DONE(SUCCEED)
+
+            /* If we've gotten this far (ie. there are no open file IDs in the file/mount hierarchy), fall through to flush & close */
+            break;
+
+        case H5F_CLOSE_DEFAULT:
+        default:
+            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file, unknown file close degree")
+    } /* end switch */
+
+    /* Mark this file as closing (prevents re-entering file shutdown code below) */
+    f->closing = TRUE;
+
+    /* If the file close degree is "strong", close all the open objects in this file */
+    if(f->shared->fc_degree == H5F_CLOSE_STRONG) {
+        HDassert(nopen_files ==  0);
+
+        /* Forced close of all opened objects in this file */
+        if(f->nopen_objs > 0) {
+            size_t obj_count;       /* # of open objects */
+            hid_t objs[128];        /* Array of objects to close */
+            herr_t result;          /* Local result from obj ID query */
+            size_t u;               /* Local index variable */
+
+            /* Get the list of IDs of open dataset, group, & attribute objects */
+            while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATASET | H5F_OBJ_GROUP | H5F_OBJ_ATTR, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0
+                    && obj_count != 0 ) {
+
+                /* Try to close all the open objects in this file */
+                for(u = 0; u < obj_count; u++)
+                    if(H5I_dec_ref(objs[u]) < 0)
+                        HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object")
+            } /* end while */
+            if(result < 0)
+                HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(1)")
+
+            /* Get the list of IDs of open named datatype objects */
+            /* (Do this separately from the dataset & attribute IDs, because
+             * they could be using one of the named datatypes and then the
+             * open named datatype ID will get closed twice)
+             */
+            while((result = H5F_get_obj_ids(f, H5F_OBJ_LOCAL | H5F_OBJ_DATATYPE, (int)(sizeof(objs) / sizeof(objs[0])), objs, FALSE, &obj_count)) <= 0
+                    && obj_count != 0) {
+
+                /* Try to close all the open objects in this file */
+                for(u = 0; u < obj_count; u++)
+                    if(H5I_dec_ref(objs[u]) < 0)
+                        HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't close object")
+            } /* end while */
+            if(result < 0)
+                HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_ids failed(2)")
+        } /* end if */
+    } /* end if */
+
+    /* Check if this is a child file in a mounting hierarchy & proceed up the
+     * hierarchy if so.
+     */
+    if(f->parent)
+        if(H5F_try_close(f->parent) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close parent file")
+
+    /* Unmount and close each child before closing the current file. */
+    if(H5F_close_mounts(f) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't unmount child files")
+
+    /* If there is more than one reference to the shared file struct and the
+     * file has an external file cache, we should see if it can be closed.  This
+     * can happen if a cycle is formed with external file caches */
+    if(f->shared->efc && (f->shared->nrefs > 1))
+        if(H5F_efc_try_close(f) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't attempt to close EFC")
+
+    /* Delay flush until the shared file struct is closed, in H5F_dest.  If the
+     * application called H5Fclose, it would have been flushed in that function
+     * (unless it will have been flushed in H5F_dest anyways). */
+
+    /*
+     * Destroy the H5F_t struct and decrement the reference count for the
+     * shared H5F_file_t struct. If the reference count for the H5F_file_t
+     * struct reaches zero then destroy it also.
+     */
+    if(H5F_dest(f, H5AC_dxpl_id, TRUE) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "problems closing file")
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_try_close() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_get_id
+ *
+ * Purpose:	Get the file ID, incrementing it, or "resurrecting" it as
+ *              appropriate.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Raymond Lu
+ *		Oct 29, 2003
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5F_get_id(H5F_t *file, hbool_t app_ref)
+{
+    hid_t       ret_value;
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    HDassert(file);
+
+    if(file->file_id == -1) {
+        /* Get an atom for the file */
+        if((file->file_id = H5I_register(H5I_FILE, file, app_ref)) < 0)
+	    HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to atomize file")
+    } else {
+        /* Increment reference count on atom. */
+        if(H5I_inc_ref(file->file_id, app_ref) < 0)
+            HGOTO_ERROR(H5E_ATOM, H5E_CANTSET, FAIL, "incrementing file ID failed")
+    } /* end else */
+
+    ret_value = file->file_id;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F_get_id() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_incr_nopen_objs
+ *
+ * Purpose:	Increment the number of open objects for a file.
+ *
+ * Return:	Success:	The number of open objects, after the increment
+ *
+ * 		Failure:	(can't happen)
+ *
+ * Programmer:	Quincey Koziol
+ *		koziol@hdfgroup.org
+ *		Mar  6 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+unsigned
+H5F_incr_nopen_objs(H5F_t *f)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(f);
+
+    FUNC_LEAVE_NOAPI(++f->nopen_objs)
+} /* end H5F_incr_nopen_objs() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_decr_nopen_objs
+ *
+ * Purpose:	Decrement the number of open objects for a file.
+ *
+ * Return:	Success:	The number of open objects, after the decrement
+ *
+ * 		Failure:	(can't happen)
+ *
+ * Programmer:	Quincey Koziol
+ *		koziol@hdfgroup.org
+ *		Mar  6 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+unsigned
+H5F_decr_nopen_objs(H5F_t *f)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(f);
+
+    FUNC_LEAVE_NOAPI(--f->nopen_objs)
+} /* end H5F_decr_nopen_objs() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_build_actual_name
+ *
+ * Purpose:	Retrieve the name of a file, after following symlinks, etc.
+ *
+ * Note:	Currently only working for "POSIX I/O compatible" VFDs
+ *
+ * Return:	Success:        0
+ *		Failure:	-1
+ *
+ * Programmer:	Quincey Koziol
+ *		November 25, 2009
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5F_build_actual_name(const H5F_t *f, const H5P_genplist_t *fapl, const char *name,
+    char **actual_name/*out*/)
+{
+    hid_t       new_fapl_id = -1;       /* ID for duplicated FAPL */
+    herr_t      ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(fapl);
+    HDassert(name);
+    HDassert(actual_name);
+
+    /* Clear actual name pointer to begin with */
+    *actual_name = NULL;
+
+/* Assume that if the OS can't create symlinks, that we don't need to worry
+ *      about resolving them either. -QAK
+ */
+#ifdef H5_HAVE_SYMLINK
+    /* Check for POSIX I/O compatible file handle */
+    if(H5F_HAS_FEATURE(f, H5FD_FEAT_POSIX_COMPAT_HANDLE)) {
+        h5_stat_t lst;   /* Stat info from lstat() call */
+
+        /* Call lstat() on the file's name */
+        if(HDlstat(name, &lst) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve stat info for file")
+
+        /* Check for symbolic link */
+        if(S_IFLNK == (lst.st_mode & S_IFMT)) {
+            H5P_genplist_t *new_fapl;   /* Duplicated FAPL */
+            int *fd;                    /* POSIX I/O file descriptor */
+            h5_stat_t st;               /* Stat info from stat() call */
+            h5_stat_t fst;              /* Stat info from fstat() call */
+            char realname[PATH_MAX];    /* Fully resolved path name of file */
+            hbool_t want_posix_fd;      /* Flag for retrieving file descriptor from VFD */
+
+            /* Perform a sanity check that the file or link wasn't switched
+             * between when we opened it and when we called lstat().  This is
+             * according to the security best practices for lstat() documented
+             * here: https://www.securecoding.cert.org/confluence/display/seccode/POS35-C.+Avoid+race+conditions+while+checking+for+the+existence+of+a+symbolic+link
+             */
+
+            /* Copy the FAPL object to modify */
+            if((new_fapl_id = H5P_copy_plist(fapl, FALSE)) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_CANTCOPY, FAIL, "unable to copy file access property list")
+            if(NULL == (new_fapl = (H5P_genplist_t *)H5I_object(new_fapl_id)))
+                HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "can't get property list")
+
+            /* Set the character encoding on the new property list */
+            want_posix_fd = TRUE;
+            if(H5P_set(new_fapl, H5F_ACS_WANT_POSIX_FD_NAME, &want_posix_fd) < 0)
+                HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set character encoding")
+
+            /* Retrieve the file handle */
+            if(H5F_get_vfd_handle(f, new_fapl_id, (void **)&fd) < 0)
+                HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve POSIX file descriptor")
+
+            /* Stat the filename we're resolving */
+            if(HDstat(name, &st) < 0)
+                HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to stat file")
+
+            /* Stat the file we opened */
+            if(HDfstat(*fd, &fst) < 0)
+                HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, FAIL, "unable to fstat file")
+
+            /* Verify that the files are really the same */
+            if(st.st_mode != fst.st_mode || st.st_ino != fst.st_ino || st.st_dev != fst.st_dev)
+                HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "files' st_ino or st_dev fields changed!")
+
+            /* Get the resolved path for the file name */
+            if(NULL == HDrealpath(name, realname))
+                HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't retrieve real path for file")
+
+            /* Duplicate the resolved path for the file name */
+            if(NULL == (*actual_name = (char *)H5MM_strdup(realname)))
+                HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate real path")
+        } /* end if */
+    } /* end if */
+#endif /* H5_HAVE_SYMLINK */
+
+    /* Check if we've resolved the file's name */
+    if(NULL == *actual_name) {
+        /* Just duplicate the name used to open the file */
+        if(NULL == (*actual_name = (char *)H5MM_strdup(name)))
+            HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, FAIL, "can't duplicate open name")
+    } /* end else */
+
+done:
+    /* Close the property list */
+    if(new_fapl_id > 0)
+        if(H5I_dec_app_ref(new_fapl_id) < 0)
+            HDONE_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "can't close duplicated FAPL")
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5F_build_actual_name() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_addr_encode_len
+ *
+ * Purpose:	Encodes an address into the buffer pointed to by *PP and
+ *		then increments the pointer to the first byte after the
+ *		address.  An undefined value is stored as all 1's.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		Friday, November  7, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+void
+H5F_addr_encode_len(size_t addr_len, uint8_t **pp/*in,out*/, haddr_t addr)
+{
+    unsigned    u;              /* Local index variable */
+
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(addr_len);
+    HDassert(pp && *pp);
+
+    if(H5F_addr_defined(addr)) {
+	for(u = 0; u < addr_len; u++) {
+	    *(*pp)++ = (uint8_t)(addr & 0xff);
+	    addr >>= 8;
+	} /* end for */
+	HDassert("overflow" && 0 == addr);
+    } /* end if */
+    else {
+	for(u = 0; u < addr_len; u++)
+	    *(*pp)++ = 0xff;
+    } /* end else */
+
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5F_addr_encode_len() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_addr_encode
+ *
+ * Purpose:	Encodes an address into the buffer pointed to by *PP and
+ *		then increments the pointer to the first byte after the
+ *		address.  An undefined value is stored as all 1's.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		Friday, November  7, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+void
+H5F_addr_encode(const H5F_t *f, uint8_t **pp/*in,out*/, haddr_t addr)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(f);
+
+    H5F_addr_encode_len(H5F_SIZEOF_ADDR(f), pp, addr);
+
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5F_addr_encode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_addr_decode_len
+ *
+ * Purpose:	Decodes an address from the buffer pointed to by *PP and
+ *		updates the pointer to point to the next byte after the
+ *		address.
+ *
+ *		If the value read is all 1's then the address is returned
+ *		with an undefined value.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		Friday, November  7, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+void
+H5F_addr_decode_len(size_t addr_len, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/)
+{
+    hbool_t	    all_zero = TRUE;    /* True if address was all zeroes */
+    unsigned	    u;          /* Local index variable */
+
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(addr_len);
+    HDassert(pp && *pp);
+    HDassert(addr_p);
+
+    /* Reset value in destination */
+    *addr_p = 0;
+
+    /* Decode bytes from address */
+    for(u = 0; u < addr_len; u++) {
+        uint8_t	    c;          /* Local decoded byte */
+
+        /* Get decoded byte (and advance pointer) */
+	c = *(*pp)++;
+
+        /* Check for non-undefined address byte value */
+	if(c != 0xff)
+            all_zero = FALSE;
+
+	if(u < sizeof(*addr_p)) {
+            haddr_t	    tmp = c;    /* Local copy of address, for casting */
+
+            /* Shift decoded byte to correct position */
+	    tmp <<= (u * 8);	/*use tmp to get casting right */
+
+            /* Merge into already decoded bytes */
+	    *addr_p |= tmp;
+	} /* end if */
+        else
+            if(!all_zero)
+                HDassert(0 == **pp);	/*overflow */
+    } /* end for */
+
+    /* If 'all_zero' is still TRUE, the address was entirely composed of '0xff'
+     *  bytes, which is the encoded form of 'HADDR_UNDEF', so set the destination
+     *  to that value */
+    if(all_zero)
+        *addr_p = HADDR_UNDEF;
+
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5F_addr_decode_len() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_addr_decode
+ *
+ * Purpose:	Decodes an address from the buffer pointed to by *PP and
+ *		updates the pointer to point to the next byte after the
+ *		address.
+ *
+ *		If the value read is all 1's then the address is returned
+ *		with an undefined value.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		Friday, November  7, 1997
+ *
+ *-------------------------------------------------------------------------
+ */
+void
+H5F_addr_decode(const H5F_t *f, const uint8_t **pp/*in,out*/, haddr_t *addr_p/*out*/)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    HDassert(f);
+
+    H5F_addr_decode_len(H5F_SIZEOF_ADDR(f), pp, addr_p);
+
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5F_addr_decode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_set_grp_btree_shared
+ *
+ * Purpose:     Set the grp_btree_shared field with a valid ref-count pointer.
+ *
+ * Return:      Success:        SUCCEED
+ *              Failure:        FAIL
+ *
+ * Programmer:  Quincey Koziol
+ *              7/19/11
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_set_grp_btree_shared(H5F_t *f, H5RC_t *rc)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+    HDassert(rc);
+
+    f->shared->grp_btree_shared = rc;
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5F_set_grp_btree_shared() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_set_sohm_addr
+ *
+ * Purpose:     Set the sohm_addr field with a new value.
+ *
+ * Return:      Success:        SUCCEED
+ *              Failure:        FAIL
+ *
+ * Programmer:  Quincey Koziol
+ *              7/20/11
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_set_sohm_addr(H5F_t *f, haddr_t addr)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    f->shared->sohm_addr = addr;
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5F_set_sohm_addr() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_set_sohm_vers
+ *
+ * Purpose:     Set the sohm_vers field with a new value.
+ *
+ * Return:      Success:        SUCCEED
+ *              Failure:        FAIL
+ *
+ * Programmer:  Quincey Koziol
+ *              7/20/11
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_set_sohm_vers(H5F_t *f, unsigned vers)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    f->shared->sohm_vers = vers;
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5F_set_sohm_vers() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_set_sohm_nindexes
+ *
+ * Purpose:     Set the sohm_nindexes field with a new value.
+ *
+ * Return:      Success:        SUCCEED
+ *              Failure:        FAIL
+ *
+ * Programmer:  Quincey Koziol
+ *              7/20/11
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_set_sohm_nindexes(H5F_t *f, unsigned nindexes)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    f->shared->sohm_nindexes = nindexes;
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5F_set_sohm_nindexes() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_set_store_msg_crt_idx
+ *
+ * Purpose:     Set the store_msg_crt_idx field with a new value.
+ *
+ * Return:      Success:        SUCCEED
+ *              Failure:        FAIL
+ *
+ * Programmer:  Quincey Koziol
+ *              7/20/11
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_set_store_msg_crt_idx(H5F_t *f, hbool_t flag)
+{
+    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
+    FUNC_ENTER_NOAPI_NOINIT_NOERR
+
+    /* Sanity check */
+    HDassert(f);
+    HDassert(f->shared);
+
+    f->shared->store_msg_crt_idx = flag;
+
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5F_set_store_msg_crt_idx() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_get_file_image
+ *
+ * Purpose:     Private version of H5Fget_file_image
+ *
+ * Return:      Success:        Bytes copied / number of bytes needed.
+ *              Failure:        negative value
+ *
+ * Programmer:  John Mainzer
+ *              11/15/11
+ *
+ *-------------------------------------------------------------------------
+ */
+ssize_t
+H5F_get_file_image(H5F_t *file, void *buf_ptr, size_t buf_len)
+{
+    H5FD_t     *fd_ptr;                 /* file driver */
+    haddr_t     eoa;                    /* End of file address */
+    ssize_t     ret_value;              /* Return value */
+
+    FUNC_ENTER_NOAPI_NOINIT
+
+    /* Check args */
+    if(!file || !file->shared || !file->shared->lf)
+        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file_id yields invalid file pointer")
+    fd_ptr = file->shared->lf;
+    if(!fd_ptr->cls)
+        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "fd_ptr yields invalid class pointer")
+
+    /* the address space used by the split and multi file drivers is not
+     * a good fit for this call.  Since the plan is to depreciate these
+     * drivers anyway, don't bother to do a "force fit".
+     *
+     * The following clause tests for the multi file driver, and fails
+     * if the supplied file has the multi file driver as its top level
+     * file driver.  However, this test will not work if there is some
+     * other file driver sitting on top of the multi file driver.
+     *
+     * I'm not sure if this is possible at present, but in all likelyhood,
+     * it will become possible in the future.  On the other hand, we may
+     * remove the split/multi file drivers before then.
+     *
+     * I am leaving this solution in for now, but we should review it,
+     * and improve the solution if necessary.
+     *
+     *                                          JRM -- 11/11/22
+     */
+    if(HDstrcmp(fd_ptr->cls->name, "multi") == 0)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Not supported for multi file driver.")
+
+    /* While the family file driver is conceptually fully compatible 
+     * with the get file image operation, it sets a file driver message
+     * in the super block that prevents the image being opened with any
+     * driver other than the family file driver.  Needless to say, this
+     * rather defeats the purpose of the get file image operation.
+     *
+     * While this problem is quire solvable, the required time and 
+     * resources are lacking at present.  Hence, for now, we don't
+     * allow the get file image operation to be perfomed on files 
+     * opened with the family file driver.
+     *
+     * Observe that the following test only looks at the top level 
+     * driver, and fails if there is some other driver sitting on to
+     * of the family file driver.  
+     *
+     * I don't think this can happen at present, but that may change
+     * in the future.
+     *                                   JRM -- 12/21/11
+     */
+    if(HDstrcmp(fd_ptr->cls->name, "family") == 0)
+        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "Not supported for family file driver.")
+
+    /* Go get the actual file size */
+    if(HADDR_UNDEF == (eoa = H5FD_get_eoa(file->shared->lf, H5FD_MEM_DEFAULT)))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get file size")
+
+    /* set ret_value = to eoa -- will overwrite this if appropriate */
+    ret_value = (ssize_t)eoa;
+
+    /* test to see if a buffer was provided -- if not, we are done */
+    if(buf_ptr != NULL) {
+        size_t	space_needed;		/* size of file image */
+
+        /* Check for buffer too small */
+        if((haddr_t)buf_len < eoa)
+            HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "supplied buffer too small")
+
+        space_needed = (size_t)eoa;
+
+        /* read in the file image */
+        /* (Note compensation for base address addition in internal routine) */
+        if(H5FD_read(fd_ptr, H5AC_ind_dxpl_g, H5FD_MEM_DEFAULT, 0, space_needed, buf_ptr) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_READERROR, FAIL, "file image read request failed")
+    } /* end if */
+    
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5F_get_file_image() */
diff --git a/src/H5Fpkg.h b/src/H5Fpkg.h
index 2313f63..21034d7 100644
--- a/src/H5Fpkg.h
+++ b/src/H5Fpkg.h
@@ -288,7 +288,13 @@ H5_DLLVAR const H5AC_class_t H5AC_SUPERBLOCK[1];
 /* General routines */
 H5_DLL herr_t H5F_init(void);
 H5_DLL herr_t H5F__term_deprec_interface(void);
+H5F_t *H5F_new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id,
+    hid_t fapl_id, H5FD_t *lf);
+herr_t H5F_dest(H5F_t *f, hid_t dxpl_id, hbool_t flush);
 H5_DLL herr_t H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing);
+H5_DLL htri_t H5F_is_hdf5(const char *name);
+H5_DLL herr_t H5F_get_objects(const H5F_t *f, unsigned types, size_t max_index, hid_t *obj_id_list, hbool_t app_ref, size_t *obj_id_count_ptr);
+H5_DLL herr_t H5F_close(H5F_t *f);
 
 /* File mount related routines */
 H5_DLL herr_t H5F_close_mounts(H5F_t *f);
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index c9a0609..80266fd 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -528,6 +528,7 @@ H5_DLL unsigned H5F_get_nopen_objs(const H5F_t *f);
 H5_DLL unsigned H5F_incr_nopen_objs(H5F_t *f);
 H5_DLL unsigned H5F_decr_nopen_objs(H5F_t *f);
 H5_DLL hid_t H5F_get_file_id(const H5F_t *f);
+H5_DLL ssize_t H5F_get_file_image(H5F_t *f, void *buf_ptr, size_t buf_len);
 H5_DLL H5F_t *H5F_get_parent(const H5F_t *f);
 H5_DLL unsigned H5F_get_nmounts(const H5F_t *f);
 H5_DLL hid_t H5F_get_access_plist(H5F_t *f, hbool_t app_ref);
diff --git a/src/Makefile.am b/src/Makefile.am
index b19f205..004a01b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -50,7 +50,7 @@ libhdf5_la_SOURCES= H5.c H5checksum.c H5dbg.c H5system.c H5timer.c H5trace.c \
         H5Dio.c H5Dlayout.c \
         H5Dmpio.c H5Doh.c H5Dscatgath.c H5Dselect.c H5Dtest.c \
         H5E.c H5Edeprec.c H5Eint.c \
-        H5F.c H5Faccum.c H5Fcwfs.c \
+        H5F.c H5Fint.c H5Faccum.c H5Fcwfs.c \
         H5Fdbg.c H5Fefc.c H5Ffake.c H5Fio.c \
         H5Fmount.c H5Fmpi.c H5Fquery.c \
         H5Fsfile.c H5Fsuper.c H5Fsuper_cache.c H5Ftest.c \
diff --git a/src/Makefile.in b/src/Makefile.in
index 1d42bf0..065b796 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -155,9 +155,9 @@ am_libhdf5_la_OBJECTS = H5.lo H5checksum.lo H5dbg.lo H5system.lo \
 	H5Dbtree.lo H5Dchunk.lo H5Dcompact.lo H5Dcontig.lo H5Ddbg.lo \
 	H5Ddeprec.lo H5Defl.lo H5Dfill.lo H5Dint.lo H5Dio.lo \
 	H5Dlayout.lo H5Dmpio.lo H5Doh.lo H5Dscatgath.lo H5Dselect.lo \
-	H5Dtest.lo H5E.lo H5Edeprec.lo H5Eint.lo H5F.lo H5Faccum.lo \
-	H5Fcwfs.lo H5Fdbg.lo H5Fefc.lo H5Ffake.lo H5Fio.lo H5Fmount.lo \
-	H5Fmpi.lo H5Fquery.lo H5Fsfile.lo H5Fsuper.lo \
+	H5Dtest.lo H5E.lo H5Edeprec.lo H5Eint.lo H5F.lo H5Fint.lo \
+	H5Faccum.lo H5Fcwfs.lo H5Fdbg.lo H5Fefc.lo H5Ffake.lo H5Fio.lo \
+	H5Fmount.lo H5Fmpi.lo H5Fquery.lo H5Fsfile.lo H5Fsuper.lo \
 	H5Fsuper_cache.lo H5Ftest.lo H5FD.lo H5FDcore.lo H5FDdirect.lo \
 	H5FDfamily.lo H5FDint.lo H5FDlog.lo H5FDmpi.lo H5FDmpio.lo \
 	H5FDmulti.lo H5FDsec2.lo H5FDspace.lo H5FDstdio.lo H5FL.lo \
@@ -752,7 +752,7 @@ libhdf5_la_SOURCES = H5.c H5checksum.c H5dbg.c H5system.c H5timer.c H5trace.c \
         H5Dio.c H5Dlayout.c \
         H5Dmpio.c H5Doh.c H5Dscatgath.c H5Dselect.c H5Dtest.c \
         H5E.c H5Edeprec.c H5Eint.c \
-        H5F.c H5Faccum.c H5Fcwfs.c \
+        H5F.c H5Fint.c H5Faccum.c H5Fcwfs.c \
         H5Fdbg.c H5Fefc.c H5Ffake.c H5Fio.c \
         H5Fmount.c H5Fmpi.c H5Fquery.c \
         H5Fsfile.c H5Fsuper.c H5Fsuper_cache.c H5Ftest.c \
@@ -1025,6 +1025,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fdbg.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fefc.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Ffake.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fint.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fio.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fmount.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/H5Fmpi.Plo@am__quote@
diff --git a/test/testfiles/err_compat_1 b/test/testfiles/err_compat_1
index 3a85b86..d471e13 100644
--- a/test/testfiles/err_compat_1
+++ b/test/testfiles/err_compat_1
@@ -54,9 +54,6 @@ HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
   #001: (file name) line (number) in test_error2(): H5Dwrite shouldn't succeed
     major: Error API
     minor: Write failed
-  #002: (file name) line (number) in H5Dwrite(): can't prepare for writing data
-    major: Dataset
-    minor: Write failed
-  #003: (file name) line (number) in H5D__pre_write(): not a dataset
+  #002: (file name) line (number) in H5Dwrite(): not a dataset
     major: Invalid arguments to routine
     minor: Inappropriate type